Tuesday, April 19, 2016

MONTBLANC – VILLERET Tourbillon Bi-Cylindrique 110 Years Anniversary Limited Edition

MONTBLANCVILLERET  Tourbillon Bi-Cylindrique 110 Years Anniversary Limited Edition NEW 

Montblanc is paying tribute to 110 years of fine craftsmanship with a limited edition of three timepieces.

The Montblanc Collection Villeret Tourbillon Bi-Cylindrique 110 Years Anniversary Limited Edition — a wristwatch that features an in-house one-minute tourbillon, a double cylindrical balance spring and the Maison's Heures Mystérieuses display — sets new records in terms of ultimate precision and innovation combined with artisanal aesthetic. Being completely developed and produced internally at the Montblanc Manufacture in Villeret, this exceptional timepiece celebrates creativity and tradition in the true spirit of the Maison’s 158 years of fine watchmaking heritage.

Serpentine designs.

returns to its beginnings for the development of this new timepiece by recalling the design theme of the Maison’s first fountain pen series – the historic “Rouge et Noir” line. This iconic writing instrument, with its serpent clip, was the inspiration behind this year’s new Heritage Rouge & Noir Collection, bringing a contemporary twist to the early model with a slimmer and longer silhouette, as well as incorporating modern piston technology.

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A symbol of life and rebirth, the serpent has been an object of desire and fascination through the ages. A recurring motif in art and design, the mysterious creature was a rich source of inspiration during the Art Nouveau and Art Deco periods and today it provides the inspiration for Montblanc’s 110th Anniversary Collection, as can be seen on the face of this Villeret Tourbillon Bi-Cylindrique 110 Years Anniversary Limited Edition timepiece, where a three-dimensional, hand-engraved, anthracite serpent has been integrated into the bezel. This historic design is also depicted on the back of the 52 mm red gold case with an elegant hand-engraving of a slithering serpent.

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Mysterious hours

The serpent is just one of many captivating features on the face of the Villeret Tourbillon Bi-Cylindrique 110 Years Anniversary Limited Edition. A large tourbillon, measuring 18.4mm in diameter, occupies the top half of the watch's face, while a subdial of the same dimension at 6 o’clock shows the time display below. A closer look at it reveals an unusual set of regate-shaped hands that are not attached in the centre like a conventional timepiece, but float mysteriously above the subdial, which also displays elegant Roman numerals and rhomboid indexes on a mirrored surface. This fascinating complication called the Heures Mystérieuses is made possible thanks to two wafer-thin transparent sapphire crystal discs — one with the hour hand embossed on it, and the other with the minutes hand — which are linked to the movement and turn to indicate the time. Inspired by the mysterious clocks of the 19th century, the original designs hid the mechanism in the clock case, creating an enigma for watch connoisseurs of the day.

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For the Villeret Tourbillon Bi-Cylindrique 110 Years Anniversary Limited Edition, however, Montblanc has decided to leave the workings of the movement on show. The absence of a dial allows each owner to fully appreciate the floating hands and the Heures Mystérieuses mechanism that propels them. Black rhodium-plated bridges and plates contrast with the highly- polished mechanical parts and highlight the finest level of finishing and decoration that is one of the signatures of the Montblanc Collection Villeret timepieces.

Tourbillon upholding the highest standards

The Montblanc Collection Villeret Tourbillon Bi-Cylindrique 110 Years Anniversary Limited Edition is equipped with the hand-crafted manually-wound Calibre MB M65.63 with a one-minute tourbillon and a double cylindrical hairspring. The tourbillon is one of the most complex horological mechanisms to produce, and one of this increased size demands even more skill and expertise to create. All of its 95 components are hand- bevelled, chamfered, angled, polished and decorated in-house by Montblanc’s master craftsmen, following the same techniques of decoration as those used centuries ago. It takes a whole week to hand-bevel and hand-polish the tourbillon bridge alone, which is shaped into a double infinity symbol. This level of craftsmanship is extremely rare and only the most experienced artisans have the knowledge to produce components at this level.

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The tourbillon is detached from the movement and revolves in a case of its own, making a full rotation of its axis every minute. It has a high inertia at 59 mgcm2, a weight of 1.010 grams, and a traditional frequency of 2.5 Hertz (18,000 bph). Of particular note are three mobile compensating weights, each featuring the Minerva arrow, which can be regulated by the watchmaker to obtain perfect equilibrium for the manually-wound Calibre MB M65.63 and its 46-hour power reserve.

The bi-cylindrical hairspring under the loupe

The large escapement of the Villeret Tourbillon Bi-Cylindrique 110 Years Anniversary Limited Edition is composed of a bi-cylindrical hairspring that was developed by the engineers at the Montblanc Manufacture in Villeret exclusively for the Montblanc Collection Villeret. The vast majority of contemporary balance springs are flat and are wound around a common centre. In comparison, a cylindrical balance spring is wound around a vertical axis, with each turn positioned on top of the next, and with each one having the exact same distance from the centre. This original formation helps to eliminate any eccentricity of the centre of gravity. Montblanc has equipped its Villeret Tourbillon Bi-Cylindrique 110 Years Anniversary Limited Edition with not one, but two cylindrical hairsprings positioned concentrically, one inside the other, each with its own diameter, but both with identical torque. The springs move in opposite directions; while one spring expands, the other contracts, further optimizing isochronism and providing ultimate precision.

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Cylindrical balance springs were first used in marine chronometers at the end of the 18th century. They were regarded as the peak of excellence and performance and were installed in only the finest and most expensive marine chronometers. The accuracy of these clocks over long periods of time revolutionized navigation at sea.

Manufacturing know-how

The Montblanc Manufacture in Villeret is one of very few manufacturers with the expertise to produce its own balance springs. After intensive testing of different types of balance springs, and the metal alloy used for the wire from which balance springs are made, specialists at the manufacture are capable of producing their very-own bi-cylindrical balance springs, bringing innovation and an additional element of exclusiveness to this already exceptional timepiece strictly limited to three pieces.


Montblanc Collection VILLERET 

Model:Tourbillon Bi-Cylindrique  110 years Anniversary Limited Edition

Ident. 115934 Limitation 3 timepieces

Montblanc Manufacture Calibre MB M65.63
Type of movement                                  
Hand-wound mechanical movement with one-minute tourbillon and bi-cylindrical hairspring with double infinity tourbillon bridge
Dimensions:  16¾ lines (38.40 mm); height=10.30 mm
No. of components:  284, including 95 for the tourbillon cage
No. of rubies:  26
Power reserve: Approx. 46 hours
Balance: Screw balance, diameter=14.5 mm, moment of inertia=59 mgcm²
Frequency: 18,000 semi-oscillations per hour (2.5 Hz)
Hairspring:  Bi-cylindrical hairspring with double Phillips terminal curves
One-minute tourbillon
Main plate: Black rhodium-plated nickel silver decorated with circular-graining finishing on both sides
Bridges:  Black rhodium-plated nickel silver decorated with circular-graining decoration on both sides
Going-train: Gold-plated, faceted arms, diamond-polished surfaces
Displays:  Mysterious hours and minutes at 6 o’clock

18K red gold
Crystal: Scratch-resistant, domed sapphire crystal with anti-reflective treatment on both surfaces
Back: 18K red gold with hand-engraved Serpent decoration
Diameter=52 mm; height=14.6 mm
Watertightness:  3 bar
Crown:  18K red gold with Montblanc emblem in mother-of-pearl
Decorations on the movement parts to reveal the “mysterious hours” mechanism,
three dimensional hand-engraved anthracite Serpent integrated into the bezel,
black metallic hour and minute hands in regate-shape on sapphire crystal discs
Black alligator-skin strap with 18K red gold-plated pin buckle (5N)
pronged buckle made of gold.

Limitation 3 timepieces

Certified by the Montblanc Performance Test 500

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