Jaeger-LeCoultre – REVERSO® Tribute Nonantieme ‘Enamel’ Edition

Jaeger-LeCoultre – REVERSO® Tribute Nonantieme ‘Enamel’ Calibre 826 Pink Gold Edition 2025

A NEW INTERPRETATION WITH A DIGITAL DISPLAY OF TIME SURROUNDED BY A DEEP BLUE STARRY SKY

 KEY FACTS:

Challenging movement: Calibre 826 with 243 components and a 42-hour power reserve
Masterful craftsmanship: 70 pink gold stars shine against a night-blue enamel sky, perfected in 10 hours of work
Limited edition: offering 90 pieces

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Following the introduction in 2021 of the Reverso Tribute Nonantieme ‘Enamel’ to celebrate the Reverso’s 90th anniversary, Jaeger-LeCoultre presents a new expression of the timepiece in 18k pink gold (750/1000) with an elegant grey sunray dial and decorative enamelling on the reverse. To be made in a limited edition of 90 pieces, this new interpretation again demonstrates La Grande Maison’s constant pursuit of technical innovation married to timeless design and fine craftsmanship.

FROM POLO FIELD TO HIGH WATCHMAKING – AN ICON EVOLVES

Created in 1931, the Reverso was designed to meet the demands of the newly fashionable ‘sporting gentleman’. A challenge was set by polo-playing military officers in India during the British Raj of 1858-1947 to create a watch that could withstand the rigours of the polo field. The Reverso was the answer – a masterful integration of form and function. Quickly adopted by tastemakers from all walks of life, the Reverso soon transcended its original sporting purpose as new variations appeared – for both men and women. However, its iconic double-sided case (historical patent CH159982) and distinctive Art Deco lines have remained constant, making the Reverso one of the world’s most recognisable wristwatches.

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The Reverso was born as a deft synthesis of style and function. Rooted in the Art Deco aesthetics, it also embodied a mechanical revolution allowed by La Grande Maison’s expertise. From the very beginning of its production, Reverso’s calibres were shaped to follow the curves of its rectangular case, an ingenious answer to maximise space used and therefore the precision of the calibre. In 1931, it was seen as a revolution in Haute Horlogerie: an unusual rectangular case, powered by shaped calibres, set in a dedicated casing ring to protect them from shocks, humidity and the passing of time.

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This technical challenge, overtook by the Manufacture, was fully embraced in the beginning of the 1990s, when Jaeger-LeCoultre introduced high complications in Reverso. In 1991, marking the 60th anniversary, the Reverso Soixantieme displayed a power reserve and date, with another first – a sapphire crystal caseback, to observe the mechanical treasure within. During the decade that followed, five of the great classical complications were reinterpreted, with the movement architecture and visual displays reimagined for the rectangular Reverso case. Then, to mark the completion of another decade, the Reverso Septantieme was introduced in 2001.

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In 2021, the 90th anniversary of the Reverso’s birth, Jaeger-LeCoultre created the Reverso Tribute Nonantieme. It brought a fresh and exciting stylistic language to the Reverso, presenting an entirely new visual expression of some of watchmaking’s most familiar complications.

A NEW COLOUR FOR THE FRONT DIAL; ENAMEL AND LACQUER ENHANCE THE REVERSE SIDE

Driven by its continuing exploration of beauty and refined craftsmanship, the new interpretation of the Reverso Tribute Nonantieme ‘Enamel’ features an elegant grey sunray-brushed dial and a richly decorated reverse side. The simplicity of the Reverso Tribute iconography – elongated applied indexes, Dauphine hands and a chemin de fer minutes track – places the emphasis on the complications. The ‘Grande Date’ display at 12 o’clock is highlighted by an applied pink golden-coloured frame that echoes the rectangular shape of the case and dial. In the lower half of the dial within the small seconds counter, a moon phase display is set against the background of stars in a deep blue sky. While the colours of these details echo those on the reverse dial, the classically elegant aesthetic gives no hint of the surprise that awaits when flipping the case over.

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Turning the case reveals the Nonantieme’s distinctive and visually exciting displays wrapped in the beauty of a starry night sky. The dial comprises two round apertures of different sizes, overlapping and arranged like a figure-eight, which is encircled by gadroons that echo those on the upper and lower edges of the case. The small upper aperture displays a semi-jumping digital hour indication against a white background. Below the hour, the large aperture displays minutes on a rotating disc that is partially concealed by a three-quarter plate, lacquered in a rich shade of blue. Tiny pink gold stars are transferred onto the surface of the lacquer to depict the night sky. Within a smaller circle at the centre, a polished sun and moon indicate night and day as they pass above a horizon. The semi-circle below the horizon is decorated with a guilloché pattern of sunrays and the entire lower aperture is framed by a circle of pink gold beading (18k, 750/1000).

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The larger surface surrounding the indications – which had been an unbroken expanse of pink gold in the original Nonantieme – is transformed into a starry night sky with multiple layers of rich blue enamel sprinkled with stars. The latitude and longitude lines are engraved with a hand-held laser to reveal the underlying pink gold case metal.

CLASSIC COMPLICATIONS REINVENTED THROUGH MECHANICAL INNOVATION

Showing the same time on both faces of the watch and comprising 243 components, Calibre 826 was conceived specifically for the Reverso Tribute Nonantieme ‘Enamel’ and was developed, produced and assembled entirely in-house.

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Given La Grande Maison’s philosophy of designing movements that closely fit the shape of their case, the rectangular Reverso creates a particular challenge when designing complications that were traditionally conceived for round movements. 

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To accommodate the Grande Date display within the confined space of the upper dial, in 2021, Jaeger-LeCoultre’s engineers developed a completely new mechanism comprising two small side-by-side discs (one for the units 1–9 and one for the 10s, 20s and 30s) rather than two “stacked” discs, as is normal. When the date passes single digits, a tiny hook on the units disc latches on to the other disc, turning it to create the double-digit reading (10^th, 11^th, 12^th…etc). This patented invention has the additional benefit of displaying both digits of the date at exactly the same level, rather than one slightly lower than the other.

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Although La Grande Maison’s watchmakers had incorporated the digital hours complication in some calibres during the 1930s, they have used it rarely in recent decades. For the display, Jaeger-LeCoultre’s engineers opted for a semi-jumping rather than instantaneously jumping mechanism to allow for a more gradual and elegant transition. Also, because an instantaneous jump requires a large and sudden burst of energy, this choice safeguards the power reserve.

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Offered in a limited edition of 90 pieces, this new interpretation of the Reverso Tribute Nonantieme ‘Enamel’ underlines the timelessness and versatility of the Reverso, as well as La Grande Maison’s continuing commitment to craft and creativity alongside mechanical innovation and excellence.

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TECHNICAL CHARACTERISTICS

Model:  REVERSO Tribute Nonantieme ‘Enamel’ Pink Gold Edition

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 Reference: Q71125E1

Case
    Material: 18-carat pink gold
    Dimensions: (L x W): 49.4 x 29.9 mm, L : Lug to lug

    Thickness: 11.7mm

    Water-resistant to 30 meters
Dial and hands

•     Front dial: Appliqued hour-markers, Charcoal Grey, sunray-brushed
•     Reverse dial: Black numerals, Midnight blue, Enamel

Movement
    Manually wound, Calibre 826
    Thickness: 6.38 mm
    Number of parts: 243
    Number of jewels: 19
    Frequency: 3 Hz, 21'600 vph
    Power reserve of 42 hours
Functions/Indications
    Hours, minutes, small seconds, Grande Date, Moon phases (front)
    Digital semi-jumping hour, minutes on a disc. Night-day indication (reverse)
Strap and buckle
    Black alligator
    Lug width: 22mm
    Standard strand length at 12h: 75mm
    Length 6h: 120mm
Buckle
    Pin buckle
    Pink Gold 750/1000 (18 carats)
    Buckle width: 20mm

🔰 Limited edition of 90 pieces

  UP TO 8 YEARS OF WARRANTY

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Jaeger-LeCoultre – MASTER Hybris Artistica Calibre 945 ‘Dragon’ Cosmotourbillon Edition

Jaeger-LeCoultre – MASTER® Hybris Artistica Calibre 945 ‘Dragon’ Cosmotourbillon Gold 43mm Edition 2024

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A THREE-DIMENSIONAL DIAL AND A PINK GOLD CASE HIGHLIGHT AN EXCEPTIONAL COMPLICATION

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Key Facts: 

•  A magnificent new dial featuring three-dimensional hand-engraved dragons
•  A Cosmotourbillon orbits the dial in one sidereal day and a Northern Hemisphere sky vault displays the positions of the constellations in real time
• The chimes of a minute repeater amplify the romance of celestial timekeeping

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Jaeger-LeCoultre is delighted to present a new expression of its celebrated Calibre 945 with a magnificent new dial and bezel that capture the mythical power of the dragon. Set in a pink gold case (750/1000 (18 karats)) and offered in a limited edition of five pieces, the Master Hybris Artistica Calibre 945 ‘Dragon’ showcases La Grande Maison’s artistic creativity, its mastery of the decorative crafts and its technical ingenuity.

Inspired by the Movements of the Planets and the Mythical Power of the Dragon

Originally created in 2010, Calibre 945 is testament to the depth of Jaeger-LeCoultre’s expertise in celestial complications, uniting a sky chart with a celestial vault, a zodiacal calendar and Jaeger-LeCoultre’s patented Cosmotourbillon – a celestial flying tourbillon that orbits the dial. The calibre is further elevated by the integration of an innovative minute repeater.

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The essence of Calibre 945 is the way in which it interprets astronomical timekeeping for the wrist, using the dial to display mankind’s link to the cosmos on both a literal and philosophical level. Having fully mastered sidereal time – the measurement used by astronomers to track the apparent movement of the constellations across the night sky – Jaeger-LeCoultre’s watchmakers have created this one-of-a-kind calibre that brings celestial complications together in a fascinating new way.

A Magnificent New Dial and Bezel Showcase the Decorative Arts

In a subtle allusion to infinite depths of the night sky, the dial is constructed on multiple levels, amplifying the beauty of the celestial displays while creating a three-dimensional habitat for a pair of magnificent, sculpted gold dragons. 

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Decorated with intricately hand-engraved scales, the dragons clamber around the edge of the raised and domed sky chart disc and draw the eye towards the Cosmotourbillon. The dragons, along with the sky chart, accompany the Cosmotourbillon as it completes a full circuit of the dial in one sidereal day.

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Visible around the edge of the celestial map and beneath the tourbillon, the deepest level of the dial – a matt black sandblasted disc – is decorated with tiny stars that echo the celestial map; around its periphery, the names of the months, and the tourbillon seconds are marked in white. The months and date of the zodiacal calendar are indicated by a sun-shaped gold pointer set.

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The dial is encircled by three concentric rings that carry the indices for solar time (our everyday civil time), each finished with a different surface decoration to add visual depth. The opaline inner ring indicates 24 hours, the outermost ring, with a silver opaline finish displays minutes, and between them, the 12-hour ring is circular brushed, with applied golden indexes.

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The case is a perfect complement to the artistic dial and mechanical sophistication of the Master Hybris Artistica Calibre 945 ‘Dragon’. The bezel, decorated by the artisans in the Métiers Rares^TM atelier of the Manufacture in a process that required 50 hours of work, is hand-engraved with scales that match those on the dragons’ bodies and on the small-scale alligator lining of the watch strap.

Displaying the Cosmos on the Wrist, with a Tourbillon that Orbits the Dial

The celestial vault maps the Northern Hemisphere night sky as seen from the 46th parallel – the latitude of Jaeger-LeCoultre’s home in the Vallée de Joux – tracking the position of the constellations in real time. 

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The Cosmotourbillon is elevated beyond its purely technical function as the regulating organ of the calibre: it measures the passing of time as it makes a complete, anti-clockwise circuit of the dial in one sidereal day. With a duration of precisely 23 hours, 56 minutes and 4.1 seconds, a sidereal day is defined by Earth’s rotation measured in relation to more distant fixed stars, whereas the 24-hour solar day – our civil time – is measured by Earth's orbit around the Sun.

The Constellations Chime with an Innovative Minute Repeater

Calibre 945 also takes Jaeger-LeCoultre’s expertise in chiming watches to new heights by uniting the astronomical complications with a minute repeater – considered to be the most challenging and rewarding of all horological complications for a watchmaker to master. 

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The technical difficulty of creating one lies in the complexity of the mechanism needed to transcribe the precise time shown by the hands into a series of perfectly programmed strikes, with different sounds for hours, quarters and minutes. 

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The artistic challenge is that, this being a miniaturised musical instrument, the chimes must be pure, harmonious and clearly audible. At Jaeger-LeCoultre, this continuing quest for the ideal sound has produced several patented innovations, including crystal gongs, trebuchet hammers and a silent interval governor. In the minute repeater mechanism of Calibre 945, these inventions contribute a special magic that complements the romance of celestial timekeeping.

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Testament to Jaeger-LeCoultre’s enduring expertise in astronomical and chiming watches, the new Master Hybris Artistica Calibre 945 ‘Dragon’ eloquently expresses La Grande Maison’s constant quest to balance innovation and tradition through an inspiring synthesis of art and mechanics.

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TECHNICAL CHARACTERISTICS

 MASTER HYBRIS ARTISTICA CALIBRE 945 ‘DRAGON’

 Reference: Q52624A3

Case: 
Pink gold, 750/1000 (18 karats) with micro-blasted, satin and polished finishes; sapphire case-back
Dimensions: 45 mm x 16.05 mm 
Water resistance: 5 bar
Movement
Calibre: manual mechanical Jaeger-LeCoultre Calibre 945
Thickness 12.56mm
Frequency: 4 Hz (28,800 vph) 
Components:  570 
Number of jewels 52
Power reserve: 40 hours

 
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Functions: 
Hours/minutes, months, 24-hour indication; Cosmotourbillon indicating sidereal time; celestial disc with star chart indicating the constellations in the northern hemisphere in real time; zodiacal calendar; minute repeater
Dial
Back dial with sandblasted, opaline and circular-brushed finishes; hand-engraved dragons sculpture in 18-karat (750/1000) pink gold
Strap
Alligator leather with small-scale alligator lining 
Clasp: Gold triple-blade folding clasp

  🔰 Limited edition of 5 pieces

🔴 Price :   $ 44,300 / 49.600 € 💰

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Jaeger-LeCoultre – MASTER Hybris Artistica Calibre 184 Gyrotourbillon Edition

Jaeger-LeCoultre – MASTER® Hybris Artistica Calibre 184 Gyrotourbillon Gold 43mm Edition 2024

 

A HIGHLIGHT OF WATCHMAKING ENHANCED BY EXQUISITE DECORATIVE CRAFTS

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 Key facts:

•     An artistic reinterpretation of some of the finest watchmaking skills
•     An exceptional calibre brings together three of the greatest complications
•     Testament to the exceptional watchmaking talents and decorative crafts united within the Jaeger-LeCoultre Manufacture

In September 2024, Jaeger-LeCoultre introduces a new artistic interpretation of Calibre 184. Created in 👉2019, this exceptional movement unites the smallest version of the bi-axial Gyrotourbillon with a highly intuitive perpetual calendar, a minute repeater that sounds the Westminster chime, a one-minute constant force mechanism, a dead-beat minute hand, and a leaping date display.

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 The Master Hybris Artistica Calibre 184 will be unveiled in 18-Karat pink gold (750/1000) during the Precision Pioneer exhibition in Beijing in September, to be followed by a variant in white gold (750/1000) (18 Karats). The timepiece will be a limited edition of five pieces of each variant.

Inspired to meet the highest challenges of horology

Jaeger-LeCoultre created its Hybris collection to bring together some of the highest watchmaking skills in a single piece. The timepieces that are designated Hybris Artistica complement the exceptional mechanics with sophisticated and complex artistic decoration.

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Calibre 184 unites three of the greatest complications in the history of watchmaking – each of which represents a pillar of Jaeger-LeCoultre’s watchmaking mastery: sound, precision and astronomical complications. In addition, the Hybris Artistica interpretation showcases the Grand Feu enamelling skills of the Manufacture’s Métiers Rares™ atelier ­as well as the craft of lacquering.

\Underlining the extraordinary sophistication of Calibre 184, it takes approximately five months to assemble its 1052 components. Very few watchmakers have mastered such a high level of skill and a single watchmaker works on the entire process from start to finish.

An artistic reinterpretation of the finest watchmaking skills

Complex and visually intriguing, the dial of the Master Hybris Artistica Calibre 184 is an essay in harmony and contrast. Soft curves contrast with the rectilinear geometry of the decoration; textured surfaces contrast with high shine; visual complexity is anchored by a restrained bi-colour palette. The dials feature decorative plates of black Grand Feu enamel with a geometric pattern of fine lines, set on both sides of the sub-dial that displays the time and perpetual calendar. The centre of this sub-dial is a smoky black, semi-transparent sapphire that allows an intriguing glimpse of the calendar discs. The open-worked lower half of the dial is dominated by the visually mesmerising Gyrotourbillon, on each side of which the repeater hammers are set like wings. Set beneath them, the distinctively curved gongs are treated with black, to harmonise perfectly with the overall colour palette.

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In keeping with the complexity of this timepiece, the Grande Tradition case comprises more than 80 components, with polished, brushed and micro-blasted finishes highlighting its sculptural form. For the Master Hybris Artistica Calibre 184, Jaeger-LeCoultre’s designers have used the case-sides as a canvas to link to the new dial decoration, adding a plate on each side of the case featuring the same geometric pattern as the dial, executed in black lacquer.

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On the case, the attention to detail extends to the manner of operating the minute repeater. Rather than the traditional slider or a simple push-button, the designers developed a retractable pusher that is mounted flush with the case to preserve its elegant lines.

An exceptional calibre uniting three great complications

Calibre 184 features the fifth iteration of the Gyrotourbillon, which returns to the original form of the 2004 Gyrotourbillon design. However, the mechanism has been completely re-engineered and its size significantly reduced. The reduced size made it possible to incorporate a minute repeater without adding much thickness to the calibre. Remarkably, the 94 components making up the Gyrotourbillon weigh just 0.4 grams.

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 In watchmaking, precision depends on the delivery of a consistent power supply to the regulating organ and Jaeger-LeCoultre’s engineers have incorporated a one-minute constant force mechanism to ensure a consistent flow of energy to the Gyrotourbillon. Because it causes the minute hand to beat every 60 seconds (in similar way to a dead-beat seconds hand) the constant force mechanism also has a significant benefit for the minute repeater. Normally, if the minute repeater is activated at any point between minutes, it will chime the time a minute fast or slow. Thanks to the beating minute hand, it will always chime the precise minute shown by the hand.

The minute repeater of Calibre 184 plays the Westminster carillon – the melody made famous by the clocktower housing Big Ben at London's Westminster Palace. This chime is rarely found in watchmaking due to the complexity of the mechanism needed to achieve it. Four hammers are required, rather than the usual two, and in Calibre 184, they are stacked in pairs so that they strike the gongs from the same angle.

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In mastering chiming mechanisms, Jaeger-LeCoultre has focused on ways to improve the sound, and Calibre 184 features several patented inventions: the trébuchet hammers, which strike the gong more solidly, and the crystal gongs, so named because they are connected directly to the front crystal, enabling a cleaner transfer of the sound and increased volume. The mechanism also incorporates Jaeger-LeCoultre’s signature time-lapse reduction mechanism, which ensures a smooth cadence no matter what time it is chiming. Moreover, the minute repeater calibre features two distinctive characteristics: The gongs are curved outwards to meet the hammer at its natural strike point, and they have a square variable profile, providing a larger strike area that enables a cleaner strike.

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The perpetual calendar is a fine example of Jaeger-LeCoultre’s mastery of astronomical complications, as it takes into account the differences between the cycles of the heavenly bodies and the units of standard civil timekeeping. Consequently, the calendar needs manual adjustment only in centennial years that are not also leap years. The first time that this will be required is the year 2100. The operation of the perpetual calendar of Calibre 184 is both innovative and highly intuitive, allowing the date to be re-set either backwards or forwards.

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The layout of the calendar indications is equally intuitive. Set into the hours and minutes dial, three small windows display the year, month, and day, while the date is shown on a ring surrounding the sub-dial. The spaces between dates are perfectly uniform, except for 16 and 17, which are separated by 60 degrees. Every month, the date indicator hand leaps from one to the other, ensuring that the Gyrotourbillon isn’t obscured.

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Viewed through the sapphire case-back, the reverse side of the movement is no less compelling. The plates have been open-worked to allow a view deep into the calibre, including a full view of the Gyrotourbillon, as well as the governor for the minute repeater, which uses friction and centripetal force to regulate the speed at which the time is chimed and reduces the silent intervals between chimes.

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In keeping with the elevated level of the mechanics and the exceptional artistic craftsmanship of this timepiece, the movement features superlative hand-finishing. The bridges are hand-bevelled; sunrayed Côtes de Genève radiate out from the perpetual calendar’s anchor-point; and heat-blued screws are set into hand-bevelled and polished sinks. Several bridges are micro-blasted, to create a pleasing textural contrast with the movement’s polished elements.

Uniting three great watchmaking complications with an exceptional degree of craftsmanship and artistry, the Master Hybris Artistica Calibre 184 is eloquent testimony to the 180 skills housed within the Manufacture and reconfirms the place that Jaeger-LeCoultre holds in the world of haute horlogerie as the ‘Watchmaker of Watchmakers’™.

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TECHNICAL CHARACTERISTICS

 MASTER HYBRIS ARTISTICA CALIBRE 184

 Reference: Q5252470

Case: Pink Gold 750/1000 (18 Karats)

Dimensions: 43 mm x 14.1 mm thick

Calibre: Manually-wound Jaeger-LeCoultre Calibre 184

Functions: Hours and Minutes, Perpetual Calendar with Day, Month, Year and Leaping Date, Minute Repeater with Westminster Chime, Gyrotourbillon with one-minute constant force mechanism

Power Reserve: 50 hours

Dial: Black Grand Feu enamel with golden geometric decoration; black sapphire sub-dial

Water resistance: 5 bar (approximately 50 metres)

Strap: Black alligator with small scale lining

  🔰 Limited edition of 5 pieces 

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TECHNICAL CHARACTERISTICS

MASTER HYBRIS ARTISTICA CALIBRE 184

Reference: Q5253470

Case: White Gold 750/1000 (18 Karats)

Dimensions: 43 mm x 14.1 mm thick

Calibre: Manually-wound Jaeger-LeCoultre Calibre 184

Functions: Hours and Minutes, Perpetual Calendar with Day, Month, Year and Leaping Date, Minute Repeater with Westminster Chime, Gyrotourbillon with one-minute constant force mechanism

Power Reserve: 50 hours

Dial: Black Grand Feu enamel with golden geometric decoration; black sapphire sub-dial

Water resistance: 5 bar (approximately 50 metres)

Strap: Black alligator with small scale lining

  🔰 Limited edition of 5 pieces

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🔴 Price on Request 💰

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Jaeger-LeCoultre – MASTER® GRANDE TRADITION Calibre 948 World-Timer Tourbillon Edition

Jaeger-LeCoultre – MASTER® GRANDE TRADITION Calibre 948 World-Timer Tourbillon Gold 43mm Automatic Edition 2024

 

 REINTERPRETING THE
MASTER GRANDE TRADITION CALIBRE 948 WORLD-TIMER
A GREEN ENAMEL DIAL AND PINK GOLD CASE HIGHLIGHT AN
EXCEPTIONAL COMPLICATION

Key Facts:

•     A new interpretation of the Master Grande Tradition Calibre 948, with a green enamel dial
•     A uniquely artistic expression of the world-time complication unites mechanical excellence with rare handcrafts - enamelling, guillochage and lacquering
•     The Universal Tourbillon makes a complete circuit around the dial in 24 hours, echoing the way that Earth spins on its axis and makes a circuit around the Sun

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Throughout its history, Jaeger-LeCoultre has been distinguished by its mastery of complications and, for almost a century, this has included timepieces able to display multiple time zones simultaneously. Calibre 948 is a uniquely artistic expression of universal time, combining a world time display with a flying tourbillon that makes a complete circuit of the dial in 24 hours – an allusion to Earth’s rotation on its axis and its orbit around the Sun. 

In 2024, La Grande Maison presents a new interpretation of the Master Grande Tradition Calibre 948, with a green enamel dial that celebrates the colours of nature and showcases the skills of the Manufacture’s in-house Métiers Rares™ atelier. Set in an 18-carat (750/1000) pink gold case, it is offered in a limited edition of 20 pieces.

 The precision of the world’s time zones

As with all measurements of time, the origin of our world’s time zones lies in astronomy: the passage of our 24-hour day is determined by the rotation of Earth on its own axis. However, zones are a relatively recent concept, driven by the need to impose order and precision on international timing. Until the 19th Century, every city determined its own time, based on 12 noon being the time that the sun was at the highest point in the sky. As railway travel developed in the 19th century, this made scheduling impossible and it became clear that standardised timing – the synchronisation of clocks within a given geographical region – and global norms were needed. At the International Meridian Conference in 1884, it was decided that Greenwich Observatory in London (longitude 0°) would be the basis for calculating times around the globe and each of the 24 major time zones would be defined by 15 degrees of longitude. The world’s day would start and end at midnight at the Greenwich meridian and times would be counted east and west from there – hence the terms Greenwich Mean Time (GMT), ante meridian (am) and post meridian (pm).

The Métiers Rares™ atelier: mastery of ancestral crafts

To create the complex and richly coloured dial of the Master Grande Tradition Calibre 948, the master artisans of Jaeger-LeCoultre’s Métiers Rares™ atelier united the skills of enamelling, guillochage and lacquering. To complete a single example of the dial requires a total of more than 70 hours of meticulous work.

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Champlevé – which translates literally as ‘raised field’ – is a noble and ancient enamelling technique that originated almost 2,500 years ago. With great skill, the artisan must first carve out depressions in the surface of the precious metal, conforming precisely to the outline of the desired image. These hollow areas are then filled with multiple layers of enamel – fired at very high temperatures after each layer – until they are flush with the original surface. Adding refinement and intrigue, the enameller uses a combination of opaque and translucent enamels to create areas of lighter and darker colour that suggest the continents’ different landscapes. The Calibre 948 dial required 10 layers of enamel and represents more than 20 hours of work for the enamelling alone.

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Lacquering is a lengthy and exacting artisanal process that requires the manual application of multiple layers of coating on the surface to be decorated. It begins with a clear coat of varnish, followed by a layer of colour. This is followed by up to 15 coats of translucent lacquer, to add depth and richness – with each coat requiring a precisely controlled drying process. The lacquering is completed by polishing the disc to a perfect finish that attracts the light and amplifies the richness of the colour.

A world of time expressed through artistry of rare precision

Measuring just 25.5mm in diameter, the multi-layered dial of the Master Grande Tradition Calibre 948 is a remarkable work of art in miniature. In keeping with world-timer tradition, the centre of the dial is dominated by a map of the world as seen from the North Pole. The outline of the continents is cut from a fine plate of 18ct gold and decorated with champlevé enamel. However, unlike the traditional flattened image, this map floats above the main dial plate on a domed skeleton of pink gold formed by the longitudes and latitudes of the Northern Hemisphere. A masterpiece of laser-cutting precision, this complex and delicate domed structure brings lightness and depth to the dial and makes a subtle allusion to the depth and complexity of time measurement.

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Beneath the dome, representing the oceans, the dial plate is decorated with blue-green translucent lacquer applied over a wavy guilloché pattern that suggests the movement of the sea.

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As on all classical world timers, each time zone is represented by the name of a city, set on a green opaline ring around the central dial. Set outside the city ring are two concentric fixed rings. The inner ring indicates 24 hours, which are marked with applied rectangular indexes and laser-engraved numerals. The outer ring features the minute track, which is a laser-engraved on a background of dark green lacquer that complements the colour of the map and oceans. In a circular aperture to one side of the map, the flying tourbillon appears to float weightlessly above the oceans, spinning in 60 seconds. As the tourbillon makes a complete 360-degree revolution of the dial in 24 hours, the domed map and the city ring turn in unison, mimicking the rotation of Earth on its axis. Thus the right time in every city is always indicated by the hour marked on the city ring adjacent to the city name.

An elegant case for an exceptional calibre

When Jaeger-LeCoultre created Calibre 948, it was the first time that a world-time complication had ever been united with a flying tourbillon. Moreover, the Universal Tourbillon – patented by Jaeger-LeCoultre – makes a complete circuit of the dial every 24 hours, corresponding to the length of a mean solar day. Consisting of 388 components, the automatic movement is an eloquent expression of Jaeger-LeCoultre’s technical expertise, having been conceived, developed and entirely produced within the Manufacture.

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Despite its complexity, Calibre 948 has been designed to ensure that the watch is very simple to operate: the time is set with the crown, which synchronises all the time zones around the world. On arrival at a new destination, local time is set by the same crown, which moves only the hour hand, in one-hour jumps forwards or backwards, allowing the minutes and seconds to continue running accurately. 

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With its pure lines and refined proportions, the Master Grande Tradition case is a perfect foil for the complexity of the dial. Comprising more than 40 parts, its convex bezel contrasts with broad bevels on the lugs, and the hollowed-out lug sides add dynamic tension. Different surfaces are microblasted, polished and satin-brushed to maximise the play of light. The warmth of the pink gold is complemented by a dark green alligator strap that matches the dial.

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With its magnificent green dial, the new interpretation of the Master Grande Tradition Calibre 948 is testament to Jaeger-LeCoultre’s commitment to uniting artistic creativity and sophisticated mechanics, always maintaining the fine balance between the spirit of innovation and a profound respect for tradition.

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TECHNICAL CHARACTERISTICS

Model: MASTER GRANDE TRADITION Calibre 948 World-Timer Edition 
 
Reference: Q52824E1

Case
Pink Gold 750/1000 (18 carats)
Dimensions: 43mm diameter x 14.13mm thick
Case-back: Sapphire crystal
Water resistance: 5 bar 
Movement
Calibre: Automatic Jaeger-LeCoultre Calibre 948
Frequency: 4 Hz (28,800 vph) 
388 components
Power reserve: 48 hours
Functions
Hours, minutes, universal flying tourbillon, 
world-time display with 24-hour indication
Dial
Green translucent lacquer over a wavy guilloche pattern; 
domed skeleton structure decorated with champlevé enamel
Strap
Black alligator leather with folding buckle

 🔰 Limited edition of 20 pieces

🔴 Price :   $ 44,300 / 49.600 € 💰

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