MALTE TOURBILLON PLATINUM ONE-OF-A-KIND CREATION, ESPECIALLY FOR “ONLY WATCH 2007”
In 2005 Vacheron Constantin had created a one off steel Malte Tourbillon auctiond by Antiquorum during the "Only Watch" auction whose proceeds (euro 120,000!!) went to the Monaco Association against Muscular Dystrophy.
This year Vacheron Constantin will again be part of the "Only Watch" adventure (the auction shall take place in Monte-Carlo on Sept 20, 2007) be creating another one off Malte Tourbillon and this time in platinum: case, dial, strap stiching and most impressively the back plate holding the tourbillon is also of platinum.
This is the first time platinum is used as a movement component. The extremely complex crafting of this plate endowed with such a superlative level of finishing represents an extraordinary feat in itself, particularly given the malleability of the metal.
In addition to the platinum carriage bridge, the case and dial are also in platinum. The dial is meticulously grained using a high-tech procedure to achieve a frosted effect that highlights the texture and the luminosity of the precious metal.
The 1790H340R31 PT movement, entirely designed and manufactured by Vacheron Constantin, has been the object of exceptional finishing operations that are impossible to perform mechanically, particularly on its bars or lugs.
This work, known as “berçage” or rounding off, consists in perfectly regular filing of the tips of the arms in order to give them a cone-like or semi-cylindrical shape, while carefully marking off the centre and the heels. To complete this operation, the craftsmen smooth the part using stones, buffs, wooden pegs and finishing pastes to achieve perfectly polished rounding off.
No less than eleven hours are required to meet the stringent finishing criteria imposed by Vacheron Constantin. Calibre 1790 confirms its exceptional nature through the “Côtes de Genève” motif, the meticulous hand chamfering of the bridge edges.
Reference Malte Tonneau Tourbillon Platinum 30066/001P-9293
« Pièce unique »
Tourbillon, hand-wound mechanical movement
Carriage bridge 950 Platinum
Diameter 26.90 mm, 28.50 mm
Thickness 6.10 mm
Number of jewels 27
Frequency 18,000 vibrations / hour
Power reserve Over 40 hours
Indications Hour, minutes, seconds, power-reserve indicator
Pointer-type date calendar
Material 950 Platinum, bearing the inscription Pt 950
Diameter and thickness 36.00 mm, 48.20 mm, 11.80 mm
Shape and construction “Tonneau”, three parts
Back Fitted with a transparent, sapphire crystal, secured with screws
Finish Entirely polished case, satin finish between lugs,
Glass Sapphire glass with anti-reflective coating on one side, convex
Water-resistant Pressure of 3 Atm, equivalent to a depth of 30 m (~100 feet)
Dial and hands
Dial material 950 Platinum
Finish Frosted effect, bearing the inscription Pt 950
Nine applied hour markers in 18K white gold
Hands Hours & minutes: 18K white gold fan-shaped matte/polished finish
Seconds: white Pfinodal baton-shaped
31 days: black oxidised, fan-shaped
Power reserve: 18K white gold, baton-shaped
Bracelet and buckle Hand-stitched with platinum wire, saddle finish
Dark blue alligator mississipiensis leather, square scales
Standard buckle in 950 Platinum,
Half Maltese cross, polished, 18 mm