MONTBLANC COLLECTION VILLERET 1858 / Chronographs / Grand Chronographe Authentique Joaillerie

MODELGrand Chronographe Authentique Joaillerie
Limitation8 pieces
Ident No.104010
MOVEMENT
CalibreMB M16.29
Movement typeManually wound monopusher chronograph
ChronographMonopusher chronograph mechanism with column wheel and horizontal coupling
IndicationsCentral hours and minutes, seconds at 9 o’clock
Displays (Chronograph)Central seconds, 30-minute counter at 3 o’clock
Diameter38.40 mm
Height6.30 mm
Number of components252 components
Number of jewels22 jewels (hemispherical, cambered, olive-cut)
Power reserveApprox. 55 hrs
BalanceScrew balance, Ø 14.5 mm; 59 mg.cm2
Frequency18,000 vibrations per hour (2.5 Hz)
Balance springWith Phillips curve
PlateRhodium-plated German silver, circular-grained on both sides, hand-chamfered edges
BridgesRhodium-plated German silver, “Côtes de Genève”, recesses circular-grained on both sides, hand-chamfered edges
Going trainWheels: gold-plated, circular-grained, chamfered, diamond hubs on both sides
Pinions: polished faces and toothing, burnished pivots
CASE
Material18K red gold
BezelDiamond pavé setting (~2.25 ct)
Sapphire crystalCambered sapphire crystal
Case BackScrewed domed sapphire crystal case back, hinged cuvette with patented release mechanism
CrownIntegrated chronograph button with Montblanc emblem in mother-of-pearl
DialSolid 18K gold dial with white mother-of-pearl inlays
Hands18K gold, chronograph hands in Pfinodal ®
HornsWith patented cuvette release mechanism
Diameter47mm
Height13.55 mm
Water resistant3 bar (30 m)
STRAP
Material/ColourHand-stitched alligator-skin / Brown
Clasp/Buckle18K red gold pin buckle