ARNOLD & SON – CHRONOMETRY Longitude Titanium Chronometer

ARNOLD & SON – CHRONOMETRY Longitude Titanium Chronometer - 2024

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High-sea watchmaking: Arnold & Son Longitude Titanium

Arnold & Son, a benchmark in classic fine watchmaking, is exploring uncharted territory on the map of horology. Longitude Titanium is a sports-chic COSC-certified chronometer with a 42.5 mm titanium case. 

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The dial of Longitude Titanium is vertical satin-finished in a continuation of the bracelet’s finish, which is subtly intersected by the polished edges of its links. With a power-reserve display at 12 o’clock and an imposing seconds counter at 6 o’clock, Longitude Titanium pays tribute to John Arnold’s marine chronometers, his revolutionary vision and his decisive role in calculating longitude at sea.

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The aesthetics and construction of John Arnold’s marine chronometers were necessarily classic and functional, and were adapted to the harsh conditions of the high seas. Longitude Titanium, a contemporary interpretation of the great English watchmaker’s work, coherently combines this naval heritage with a refined design and highly resistant materials. 

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The movement’s ‘chronometer’ certification is an essential addition to this scene, with its historical ties to Arnold’s creations and his quest for accuracy.

Ergonomic spirit

As a natural consequence of this maritime identity, Longitude presents a titanium case whose curves and profile are directly inspired by the design of contemporary sailing boats. The case middle is taut like a ship’s waterline, while the case back is basin-shaped like a keel. 

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The base of the bezel – the ship’s rail – is graduated with 60 notches, echoing the fluted ring of John Arnold’s marine chronometers. The finishes – polished on the flanks and satin-finished on the flat surfaces – continue this high-sea influence. 

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The crown, protected by a shoulder, is screwed down to guarantee water-resistance to 100 metres.

Curved spirit

With its flowing curves, Longitude Titanium is both comfortable to wear and a joy to behold. Each of the series is fitted with an integrated titanium bracelet. Everything is rounded with no straight lines, even in the finer details as the links themselves are domed. 

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The succession of gentle curves and combination of polished and satin-finished surfaces are a continuation of the case’s identity. Longitude Titanium is complemented by an interchangeable system and comes with an additional rubber strap.

Watchmaking spirit

The dial of Longitude Titanium has been designed in a graphic and historical spirit. This graphic aspect can be seen in the satin-finished, polished and luminescent hour-markers that recall the shape of the bracelet links. 

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It is also graphic in the display of its indications, which are aligned with the vertical axis of the dial: a mirror-polished power-reserve indicator shown by cut-outs in the dial at 12 o’clock, the hour and minute hands in the centre, and the imposing small seconds at 6 o’clock. 

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However, this layout was also chosen for its ties to John Arnold’s marine chronometers, as it was he who introduced this arrangement and established it as standard.

Chromatic spirit

Cornwall, John Arnold’s birthplace, inspired the colours of the Longitude dials. 

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The first edition, limited to 88 timepieces, is adorned with a sandy golden shade called ‘Kingsand’ in reference to the eponymous beach, which is one of the county’s hidden jewels. The second version sports an ocean blue, while the third and final series is a fern green.

Inventive spirit

During the 18th century, maritime trade was the main source of wealth. New routes opened up on the three major oceans, offering vast prospects. However, high-sea navigation was hampered by as yet incomplete maps and charts and, above all else, by inaccurate longitudes, i.e. the position of boats on the east/west axis. In 1714, the British Parliament passed the Longitude Act, which offered a prize of twenty thousand pounds to anyone who could develop a simple and dependable method for determining the longitude of a ship at sea. Briton John Harrison thus invented the marine chronometer, which would be used for centuries to come.

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His method involved measuring the difference between the local time on the boat, by finding solar noon, and the time of an onboard precision clock capable of keeping the time at the port of departure. John Arnold developed, improved and simplified the principles presented by Harrison. He started to supply his marine chronometers in 1771, which were more robust, affordable, extremely accurate and would go on to become essential to high-sea navigation.

Kinetic spirit

At the heart of Arnold & Son Longitude Titanium beats the new A&S6302 calibre, certified by the Contrôle Officiel Suisse des Chronomètres (COSC). 

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It is wound by an oscillating weight with a design influenced by sailing. Its shape is reminiscent of the prow of an 18th-century English frigate cleaving through the water, and it is carved from a single block of 22-carat gold. Its felloe is engraved with graduations similar to those on a sextant – another maritime element.

Mechanical spirit

The calibre is lavished with the same high standard of finishes commonly seen at Arnold & Son, such as chamfered bridges with the house’s specialty ‘Rayons de la Gloire’ motif. 

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Like all its movements, the A&S6302 was entirely developed, produced, decorated, assembled, adjusted and cased up at the Manufacture in La Chaux-de-Fonds. This calibre features a large barrel and an oscillation frequency of 4 Hz, providing a 60-hour power reserve.

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TECHNICAL SPECIFICATIONS

Collection:  CHRONOMETRY

Model:  CHRONOMETRY Longitude Titanium

 References

• Kingsand gold: 1LTAT.J01A.N001U – 🔰 Limited editions 88 timepieces, 🔴CHF 22,600 incl. VAT (subject to change)
• • Click, to see the large size. ▶ BIG FOTO  
  
  
  
  
• Ocean blue: 1LTAT.U01A.N001U – 🔴CHF 21,500 incl. VAT (subject to change)
• • Click, to see the large size. ▶ BIG FOTO  
  
  
  
• Fern green: 1LTAT.F01A.N001U – 🔴CHF 21,500 incl. VAT (subject to change)
• • Click, to see the large size. ▶ BIG FOTO  
  
  
  

Functions
    hours, minutes, small seconds, power reserve
Movement
    Calibre: A&S6302, self-winding mechanical, COSC-certified
    Jewels: 36
    Diameter: 33.00 mm
    Thickness: 6.65 mm
    Power reserve: 60 hours
    Frequency: 4 Hz/28,800 vph
    Finishes: mainplate: palladium finish, circular-grained
    bridges: palladium finish, polished and chamfered, ‘Rayons de la Gloire’ motif
    wheels: golden finish, circular satin-finished
    screws: blued and chamfered, mirror-polished heads
    oscillating weight: 22-carat red gold (5N), skeletonised, chamfered, engraved
Case
    Material: titanium
    Diameter: 42.5 mm
    Thickness: 12.25 mm (with crystal)
    Crystal: sapphire, anti-reflective coating on both sides
    Case back: sapphire crystal, anti-reflective coating
    Water-resistance: 10 bar (100 m/330 ft)
Dial
    Kingsand gold, ocean blue or fern green PVD treatment, vertical satin finish
    power reserve: blue PVD treatment, golden finish or rhodium-plating, mirror-polished small seconds: snailed
    hour-markers: rhodium-plated or golden finish, coated with Super-LumiNova
    hands: rhodium-plated or golden finish, skeletonised, coated with Super-LumiNova
Interchangeable bracelet       
    titanium, folding clasp
    Additional strap: blue or green rubber, titanium pin buckle

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Press releases - 2024
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ARNOLD & SON – ULTRATHIN TOURBILLON Skeleton Edition

ARNOLD & SON – ULTRATHIN TOURBILLON Skeleton Platinum/Red Gold Limited Edition - 2024

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 The finesse of curves

With its graceful curves and wide apertures, Ultrathin Tourbillon Skeleton also stands out for its slimness. Its new case, with a diameter of 41.5 mm and a thickness of 8.4 mm, presents the flying tourbillon calibre in its purest expression. 

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The Ultrathin Tourbillon Skeleton collection, adorned in red gold or platinum, is issued in two limited series featuring 28 watches apiece.

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Arnold & Son continues its tour of the Ultrathin Tourbillon collection. The A&S8320 calibre unveils its curves, apertures and details within a 41.5 mm case in either red gold (5N) or platinum (PT 950), each released in a run of 28 timepieces. 

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Encased in this precious housing, Arnold & Son’s flying tourbillon stands out for its finesse and precision.

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Finesse, because at just 3.3 mm thick, it is one of the slimmest skeleton tourbillon calibres in existence. Precision, because this one-minute flying tourbillon is assembled with a variable-inertia balance for enhanced calibration stability.

Radiating originality

The purpose of a skeleton is to convey a message, be it geometric, generic or minimal. 

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For Ultrathin Tourbillon Skeleton, the skeletonisation of the calibre reveals pronounced curves and numerous inflection points that are highlighted by an original finish. 

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On both the Ultrathin Tourbillon Skeleton Red Gold and Platinum, the bridges are treated with rose-gold PVD (4N) after being decorated with radiating Côtes de Genève stripes.

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The flange around the calibre adopts this same finish, clearly revealing the Arnold & Son signature at 6 o’clock and enabling the off-centred white opal dial to be displayed in its purest form.

Golden carriage

At the heart of Ultrathin Tourbillon Skeleton beats the A&S8320 calibre, whose architecture and slimness are its principal protagonists. Designed without an upper bridge to minimise its thickness, the calibre is classed as a flying tourbillon.

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The variable-inertia balance with inertia blocks ensures more precise calibration over time. The slender triangular carriage is supported by a double arrow, which is actually a counterpoise. 

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The arrowhead on the staff of the escape wheel serves as a seconds pointer, as the carriage completes one rotation per minute.

Performance reserve

The changes to the tourbillon carriage and regulating organ give the A&S8320 calibre a power reserve of 100 hours. 

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While this is a larger power reserve than for standard tourbillons, particularly slim ones, it is entirely in line with the performance regularly achieved by Arnold & Son calibres.

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TECHNICAL SPECIFICATIONS

Collection:  ULTRATHIN TOURBILLON

Model:  ULTRATHIN TOURBILLON Skeleton Edition

• Red gold: 1UTBR.Z01A.C246R, 28 timepieces – CHF 74,400 incl. tax (subject to change)

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• Platinum: 1UTBX.Z01A.C245X, 28 timepieces – CHF 86,200 incl. tax (subject to change)

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 Movement 
Calibre  A&S8320, 1 minute flying tourbillon, manual winding 
Jewels  29 
Diameter  32.00 mm Thickness  3.30 mm 
Power reserve  100 hours 
Frequency 3 Hz / 21,600 vph 
Finishes:   

• mainplate: skeletonised, rose-gold PVD treatment (4N), Côtes de Genève stripes radiating from the centre
• bridges: skeletonised, rose-gold PVD treatment (4N), polished and chamfered by hand, Côtes de Genève stripes radiating from the centre
• wheels: circular satin-finished
• screws: blued and chamfered, mirror-polished heads
• tourbillon carriage: ‘Arnold & Son’ signature, polished, satin-finished and chamfered by hand

Functions hours, minutes
Dial 
Skeleton - White opal Gold powder mixed with coloured aluminium sparkles  
flange: coloured and circular satin-finished
Hour dial 
base: white mother-of-pearl, domed 
ring: rhodium-plated or with 4N gold plating
Case 
Material  18-carat (5N) red gold or Pt950 platinum 
Diameter  41.50 mm 
Thickness  8.40 mm (with crystal) 
Crystal  domed sapphire with an anti-reflective coating on both sides
Case back  sapphire crystal, with an anti-reflective coating 
Water-resistance 3 bar (30 metres /100 feet)
Strap 
Material 
Red gold: blue alligator leather, black alligator leather lining, hand-stitched
Platinum: brown alligator leather, black alligator leather lining, hand-stitched
Clasp: folding clasp in titanium with cover in 18-carat (5N) red gold or platinum (PT 950)

 🔰 Limited editions 28 timepieces released of each model 

🔴 Swiss retail prices Red gold: CHF 74,400 including taxes (subject to change) Platinum: CHF 86,200 including taxes (subject to change) 💰

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Press releases - 2024
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CH – 2300 La Chaux-de-Fonds
Switzerland
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ARNOLD & SON – TIME PYRAMID Gold & Platinum Edition

 

ARNOLD & SON – TIME PYRAMID Red Gold & Platinum Vertical Time Edition 2023

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Arnold & Son continues to reflect on its most iconic and classic collections. Time Pyramid, with its unique appearance and structure, has been elegantly revisited. With a fully redesigned case in a new diameter of 42.5 mm, a blue aventurine glass case back and a white opal minutes circle, the 

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Time Pyramid collection is also brought to life through materials. Red gold (5N) and platinum (PT950) offer precious alternatives, with each colour duplicated on the rim of the hours and minutes dial. With its contrasts, its play on transparency and sense of depth and symmetry, Time Pyramid 42.5 explores every creative field in watchmaking to assert its distinction.

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Our conception of time is often either linear or cyclical. A vertical alignment is not part of our mental landscape. And yet, it is this vision that Arnold & Son has chosen to portray on Time Pyramid. Inspired by the creations of John Arnold and his British peers, it revives a clock shape that was fashionable in the 1830s. 

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By arranging the movement’s organs from top to bottom instead of in a circle, Arnold & Son goes beyond the chronometric horizon to achieve an unparalleled feat of design.

Design

In creating Time Pyramid, Arnold & Son has revisited, adapted and extended clockmaking codes. Devoid of a full-sized dial, this wristwatch reveals a skeletonised movement in the shape of a pyramid. Alternatively, it can be seen as taking the form of an anchor, recalling the Arnold & Son logo and making direct reference to John Arnold’s title as watchmaker for the Royal Navy.

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In the new case, with a diameter of 42.5 mm, a thickness of 10.72 mm, and in a choice of either red gold (5N) or platinum (PT950), the distinct features of Time Pyramid’s movement stand out. Its crown at 6 o’clock remains unique in the world of watchmaking, as does its baroque approach to symmetry.

Case back

The expression ‘open-air’ applies literally here, as the glass used for the case-back offers yet another new interpretation by Arnold & Son. 

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  Neither transparent nor opaque, it is composed of an extremely thin disc of aventurine glass in what constitutes a first for this iconic material.

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Constellated with copper inclusions, aventurine glass originated in the region of Venice, which is renowned for its glass-making culture. 

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It is said to have been discovered by accident when a workman dropped some copper filings into a vat of molten glass. One cooled and cut, the dazzling ‘all’avventura’ glass revealed a myriad of sparkles. 

Light

Arnold & Son has chosen to use this decorated glass as a backdrop for its Time Pyramid. This backdrop allows the light to filter through when the watch is not being worn, revealing interplays of transparency and colour.

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The interaction of reflections is just as strong on the dial, where alternating gold-plated and NAC-treated (anthracite) finishes showcase the Côtes de Genève stripes. The subtle glimpse it offers of the two barrels’ bridges reinforces the powerful and omnipresent sense of symmetry that underpins Time Pyramid.

Structure

The movement driving Time Pyramid is displayed for all to see. The case’s wide opening and slender bezel showcase the movement’s mechanical arrangement, while the screw balance sits majestically at 12 o’clock. 

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Below, the gear train highlights an array of finishes that include hand chamfering, satin-finished and sunray-brushed wheels, snailed barrels and blued screws. The calibre’s structure then splits in two beneath a ring in white opal – the signature stone of Arnold & Son’s off-centred dials.

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On either side of the encircled dial, two power-reserve indicators mirror one other, indicating the same information and reflecting the two barrels that power the calibre A&S1615 just a few millimetres below the surface. 

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Fully developed, machined, assembled and adjusted at the Manufacture, it can operate for 90 hours without rewinding.

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TECHNICAL SPECIFICATIONS

Collection:  TIME PYRAMID

Model:  TIME PYRAMID Red Gold & Platinum Edition

References

• Red Gold: 1TPER.W01A.C153A

 Click, to see the large size. ▶ BIG FOTO      

Platinum: 1TPEX.W01A.C153X  

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 Movement

Calibre  A&S1615 with manual winding
Jewels  27
Diameter  37.60 mm
Thickness  4.40 mm
Power reserve  90 hours
Frequency  3 Hz/21,600 vph
Finishes
mainplate: NAC-treated, satin-finished
bridges: NAC-treated, hand-chamfered, vertical Côtes de Genève stripes
wheels: gold-plated, circular satin-finish
screws: blued and chamfered, mirror-polished heads
Hours dial  white opal  

Functions   hours, minutes, seconds, double power reserve
Dial 
Hours on a white opal disc, minutes on a rhodium plated ring
Case
Material  18-carat (5N) red gold or platinum (PT 950)
Diameter  42.5 mm
Thickness  10.72 mm (with crystal)
Crystal  domed sapphire with an anti-reflective coating on both sides
Case back  blue aventurine glass lined with a sapphire crystal, anti-reflective coating
Water resistance  3 bar (30 metres/100 feet)
Strap
Material  blue alligator leather, black calfskin lining, hand-stitched
Buckle  pin buckle, 18-carat (5N) red gold or platinum (PT 950)

Limited edition

• red gold: 88 timepieces
• platinum: 38 timepieces 

🔴Swiss retail price

• Red Gold: CHF 43,000 incl. tax (subject to change)
• Platinum: CHF 54,900 incl. tax (subject to change)

#ARNOLDandSON; #TIMEYRAMID; #CalibreA&S1615; #VerticalTime; #Platinum; #RedGold

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Press releases - 2023
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Marketing & Sales
Boulevard des Eplatures 38
CH – 2300 La Chaux-de-Fonds
Switzerland
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ARNOLD & SON – PERPETUAL MOON 41.5 Platinum “Celestial Blue” Edition

 

ARNOLD & SON – PERPETUAL MOON 41,5 Platinum “Celestial Blue” Edition 2023

 
The cold shimmer of a starry night. The diaphanous presence of a large mother-of-pearl moon. The pale gleam of platinum. Perpetual Moon 41.5 Platinum “celestial blue” is expanding the collection’s different variations on the largest astronomical moon. Every part of this piece evokes the radiance of the night, from the dial stamped with the House’s “Stellar Rays” decor to the moon disc in a grained sky and the navy-blue alligator-leather strap. 

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Arnold & Son continues to explore the theme of moon phases with a constant eye for detail and decoration. After revisiting the design of the Perpetual Moon, this celestial-blue version is joining the collection. As always, in the backdrop, the moon-phase complication is accentuated to striking effect. In a platinum case measuring 41.5 mm in diameter and 11.30 mm thick, Perpetual Moon 41.5 Platinum “celestial blue” presents the largest of all moons.

Delicacy

This edition showcases the latest characteristics of the Perpetual Moon collection, substantially redesigned to achieve greater refinement and subtlety. The lugs have been simplified and refined. Instead of their original cross shape, they now present a tauter form of plunging bars with bevelled ends. 

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They form a single piece with the case middle, in terms of both their construction and appearance. After remaining at 42 mm for a long time, the case has been slightly reduced to 41.5 mm without altering the dial opening, giving a slimmer bezel instead. As a result, the eye is drawn in towards the dial, its finishes, its immense moon and its dominant pale-blue shade.

Light

The dial is adorned with the “Stellar Rays” finish. Its aesthetic is obtained through skilfully irregular engraving. Various depths and widths of rays are successively combined to create a specific rhythm. Their sequence produces a fluctuating play of light, which is accentuated by the depth created by several layers of transparent lacquer.

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The large white mother-of-pearl moon is realistically rendered with hand-painted shadows and coated with Super-LumiNova. It is placed on a grained sky featuring a midnight-blue PVD treatment. Following the tradition of the Perpetual Moon collection, it is surrounded by the Big Dipper and Cassiopeia constellations, which are also hand-painted and coated with luminescent material.

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The constellations have been chosen as a reference to John Arnold’s history as a maker of naval chronometers. The Big Dipper and Cassiopeia have been used as points of reference since time immemorial. Midway between these easily identifiable constellations is the North Star. Its position inevitably defines the North and its angular altitude, or position in the North-South plane, and allows the distance to the equator, i.e. the latitude, to be estimated. Before instruments for measuring longitude were invented, it was the most reliable way to determine the position of a boat in the middle of the ocean.

Accuracy

On the case back, a secondary indicator allows the moon phase to be adjusted quickly and precisely. The hand-wound calibre that powers it, reference A&S1512, is capable of tracking the development of its segments with exceptional precision. The duration of a complete lunar cycle is 29 days, 12 hours, 44 minutes and 2.8 seconds. Arnold & Son has succeeded in representing it in such a way that it would take 122 years for this movement, if regularly wound, to accumulate a day’s difference between its display and celestial reality.

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Like all Arnold & Son movements, the A&S1512 calibre has been entirely developed, manufactured, decorated, assembled, adjusted and cased at the Manufacture in La Chaux-de-Fonds. The calibre features two barrels and an oscillating frequency of 3 Hz, providing a power reserve of 90 hours.

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TECHNICAL SPECIFICATIONS

Collection:  PERPETUAL MOON

Model:  PERPETUAL MOON 41.5 Platinum “Celestial Blue” Edition

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Reference 1GLBX.U01A.C200X


Movement
    Calibre A&S1512, hand-wound mechanical
    Jewels: 27
    Diameter:34 mm
    Depth: 5.35 mm
    Power reserve: 90 hours
    Frequency: 3 Hz / 21,600 vibrations/h
    Finishes
            main plate: rhodium-finished, Côtes de Genève stripes radiating from the centre
            bridges: polished and chamfered
            wheels: circular satin-finished
            screws: blued and chamfered, polished heads
            second moon-phase indication: rhodium-finished and circular-grained

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 Functions
    Hours, minutes,
    moon-phase indication,
    second moon-phase indication on the back
Dial 
“Stellar Rays” décor, with celestial-blue PVD treatment
Moon phases    sky: grained, with midnight-blue PVD treatment
    constellations: hand-painted, enhanced with Super-LumiNova
    moons: mother-of-pearl discs enhanced with Super-LumiNova, hand-painted details
Case
Vaterial: platinum (Pt 950)
    Diameter: 41,5 mm
    Depth: 11.30 mm
    Crystal: domed sapphire with an anti-reflective coating on both sides
    Case back: sapphire with an anti-reflective coating on the interior
    Water-resistance: 30 m /100 ft
Strap & Buckle
Material: blue alligator-skin with glittering specks, red alligator-skin lining, platinum (Pt950) thread, hand-sewn
Pin buckle, 18 carat white gold
       

Edition
Limited edition of 38 timepieces

Swiss  retail price
CHF 46,000 excl. tax (may be subject to modifications) 

#ARNOLDandSON; #PERPETUALMOON; #CalibreA&S1512; #A&S1512; #EclipseI; #1GLBX.U01A.C200X; #Platinum; #MoonPhases; #AstronomicalMoon

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Press releases - 2023
-----------------------------
------------------------------------------
Marketing & Sales
Boulevard des Eplatures 38
CH – 2300 La Chaux-de-Fonds
Switzerland
info@arnoldandson.com
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www.facebook.com - Arnold and Son 1764
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