
Penfriend, a respected member of the WatchProSite community, offers an exclusive look at a truly unique and rare timepiece: the Montblanc Villeret Minerva Seconde au Centre Retour à Zéro. This article delves into the intricacies of its Calibre MB M13.18, highlighting its distinctive central second hand with a zero-reset function, a feature penfriend believes is unparalleled among Retour à Zéro watches. His detailed insights provide invaluable context for collectors interested in Montblanc's high-horology offerings.
Model Seconde au Centre Retour à Zéro
Ident No. 104343
Movement:
Calibre: MB M13.18
Movement type: Manually wound retour à Zéro movement
Chronograph: -
Indications: Central hours - minutes and seconds - seconds hand with zero-reset function
Displays (Chronograph): -
Diameter: 29.50 mm
Height: 6.40 mm
Number of components: 196 components
Number of jewels: 21 jewels (hemispherical, cambered, olive-cut)
Power reserve: Approx. 55 hrs
Balance: Screw balance, Ø 11.40 mm; 26 mg.cm.
Frequency: 18,000 vibrations 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: gold-plated, circular-grained, chamfered, diamond hubs on both sides
Pinions: polished faces and toothing, burnished pivots
Case
Material: 18 K white gold
Bezel: -
Sapphire crystal: Cambered sapphire crystal
Case back: Screwed domed sapphire crystal case back, hinged cuvette with patented release mechanism
Crown: With Montblanc emblem in mother-of-pearl
Dial: Solid 18 K gold dial with hand-crafted silver-plated circular-grained decoration
Hands: 18 K gold, central second hand in Pfinodal ®
Horns: With patented cuvette release mechanism
Diameter: 41 mm
Height: 14.80 mm
Water resistant: 3 bar (30 m)
Strap
Material/Colour: Hand-stitched alligator-skin / Black
Clasp/Buckle: Pin buckle in 18 K white gold
Limitation: 8 pieces






Henri Matisse, drawn during the later years of this time in Paris. One version resides in Moscow, while Moma has another version called Dance (1). Nice MB too. This MB looks different and very highly technical.
totally different compared to the 16.29 at 47mm :-0
it is a black enameled snake
Bedazzling; back and front. Thanks for sharing. Looks marvelous
but: no subdials compared to full fledged chronographs
To be having that book, tells u probably like art. What are your fav artists of all time? I like Henri Matisse most, and also Chagall, Frida Karlo, and Francis Bacon.
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