MONTBLANC COLLECTION VILLERET 1858 / Chronographs / Chronographe Authentique Joaillerie

MODELChronographe Authentique Joaillerie
Limitation8 pieces
Ident No.104011
MOVEMENT
CalibreMB M13.21
Movement typeManually wound monopusher chronograph
ChronographMonopusher split-seconds 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
Diameter29.50 mm
Height6.40 mm
Number of components239 components
Number of jewels22 jewels (hemispherical, cambered, olive-cut)
Power reserveApprox. 60 hrs
BalanceScrew balance, Ø 11.40 mm; 26 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 white gold
BezelDiamonds pavé setting (~ 1.55 ct)
Sapphire crystalCambered sapphire crystal
Case BackScrewed domed sapphire crystal case back, hinged cuvette with patented release mechanism
CrownWith 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
Diameter41mm
Height14.29 mm
Water resistant3 bar (30 m)
STRAP
Material/ColourHand-stitched alligator-skin / Black
Clasp/Buckle18K white gold pin buckle