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MERSMANN 18K Coin, Cal. F.Piguet 99

CHF 3,500

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Very rare and fine keyless, 18K solid gold purse watch set into a U.S. 20 Dollar coin dated 1887, retailed by prestigious boutique Mersmann, Lugano (early official dealer of Patek Philippe watches) in 1925. Features extremely rare ultra-slim manual wound movement made by Frédéric Piguet (now Blancpain) calibre 99. This calibre was in development as early as 1911, and on the market by at least 1925. Movement F. Piguet 99 was also used by Patek Philippe for its ultrathins as calibre Patek Philippe 177. Calibre FP 99 could be considered the archetype of ultrathin handwinds, with a history going back to dawn of the wristwatch era.

Concealed inside 35mm coin: a small manual wound watch that is only accessible by pressing a hidden recessed push button that only visible upon very close inspection. After carefully pressing the hidden button with your nail, the hinged top — obverse side — will then reveal a beautifully finished swing-out watch with winding crown at 1 o’clock. The small watch with an 18K yellow gold case, features a gorgeous matte off-white dial with gilded batons and needle-shaped hands.

Watch is in overall good condition, running and ready to use!

BRAND retailed by Mersmann
MODEL $20 coin watch
REFERENCE
YEAR 1920s
MOVEMENT Hand-winding
CALIBRE F. Piguet 99
CASE MATERIAL 18k Gold
CASE SIZE 35 mm
BRACELET
FEATURES ultra-slim rare movement
BOX/PAPERS no box, no papers

In fully working order. Very good condition, minor surface scratches, scuffs and discolorations through the age. Minor dent at the coin’s edge at 1h30 position (Liberty side), lid is slightly bended (visible only at certain angles) at 9h position.

Watches are sold as-is, and there is no guarantee of to be waterproof or movement accuracy, due to the nature of vintage watches. Please view all the pictures carefully as they form an integral part of the description. Any defects not mentioned but visible in the pictures will be considered as described.

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