SJX
[Purist]
8540
Technical Specifications of the Chronographs
Montblanc « Collection Villeret 1858 »
Chronographe Email Grand Feu
Monopusher chronograph with 30-minute counter
Movement Minerva 13-21 calibre
Movement type Manually wound movement with chronograph, 30-minute counter and small seconds
Chronograph Monopusher mechanism, chronograph with column wheel, horizontal clutch and semi-instantaneous minute counter
Dimensions Diameter 29,5 mm, height 6,4 mm
Number of parts 239 (complete movement)
Number of jewels 22 (hemispherical, cambered, olive-cut)
Power reserve 60 hours
Balance Screw balance, Ø 11,40 mm, 26 mgcm²
Frequency 18 000 beats per hour (2,5 Hz)
Balance spring With Phillips curve
Plate Rhodium-plated German silver, circular-grained on both sides, hand- chamfered edges
Bridges Rhodium-plated German silver, “Côtes de Genève”, recesses circular-grained on both sides
Going train Wheels: 2N gold-plated, circular-grained, chamfered, diamond hubs on both sides
Pinions: polished faces and toothing, burnished pivots
Indications (watch) Centre hours and minutes, small seconds at 9 o'clock
Displays (chronograph) Centre seconds, 30-minute counter at 3 o'clock
Case Limited editions in platinum 950 (unique piece), 18 K white gold (Editions of 8) or rose gold (Editions of 58)
Convex, antireflective 'chevé' sapphire glass and screw-in sapphire glass back under a hinged cuvette
Dimensions Diameter: 41 mm
Height: 13.56 mm
Water-resistance To 3 bar (30 meters)
Horns With patented cuvette release mechanism
Crown With mother-of-pearl Montblanc signet
Chronograph button In the side of the case at 2 o'clock
Dial Solid gold with Grand Feu champlevé enamel
Hands 18 K gold, chronograph hands in Pfinodal
Strap Hand-stitched alligator skin; pin buckle in platinum, 18 K white gold or rose gold
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Montblanc « Collection Villeret 1858 »
Grand Chronographe Email Grand Feu
Monopusher chronograph with 30-minute counter
Movement Minerva 16-29 calibre
Movement type Manually wound movement with chronograph, 30-minute counter and small seconds
Chronograph Monopusher mechanism, chronograph with column wheel,
horizontal clutch and semi-instantaneous minute counter
Dimensions Diameter 38,4 mm, height 6,3 mm
Number of parts 252 (complete movement)
Number of jewels 22 (hemispherical, cambered, olive-cut)
Power reserve 55 hours
Balance Screw balance, Ø 14,50 mm, 59 mgcm2
Frequency 18 000 beats per hour (2,5 Hz)
Balance spring With Phillips curve
Plate Rhodium-plated German silver, circular-grained on both sides, hand-chamfered edges
Bridges Rhodium-plated German silver, “Côtes de Genève”, recesses circular-grained on both sides, hand-chamfered edges
Going train Wheels: 2N gold-plated, circular-grained, chamfered, diamond hubs on both sides
Pinions: polished faces and toothing, burnished pivots
Indications (watch) Centre hours and minutes, small seconds at 9 o'clock
Displays (chronograph) Centre seconds, 30-minute counter at 3 o'clock
Case Limited editions in platinum 950 (unique piece), 18 K white gold (Editions of 8) or rose gold (Editions of 58)
Convex, antireflective 'chevé' sapphire glass and screw-in sapphire glass back under a hinged cuvette
Dimensions Diameter: 47 mm
Height: 13,65 mm
Water-resistance To 3 bar (30 meters)
Horns With patented cuvette release mechanism
Crown/ chronograph With integrated button in the crown at 3 o'clock and the Montblanc signet
button in mother-of-pearl
Dial Solid gold with Grand Feu champlevé enamel
Hands 18 K gold, chronograph hands in Pfinodal
Strap Hand-stitched alligator skin; pin buckle in platinum, 18 K white gold or rose gold
Montblanc Collection Villeret 1858 to mark 150th anniversary of Minerva - and a contest!
Les Chronographes Email Grand Feu - Last of the Minerva chronograph movements
Les Secondes au Centre Retour-à-Zéro - Central seconds zero-reset
And a CONTEST!
The Black Grand Feu Enamel Dial, for me
