4,830 CHF
Isaac Grasset & Cie. , Genève, circa 1910.Rare silver keyless watch without mainspring barrel, Swiss patent No. 5019 and 14528. Three-body, “bassine” polished. White enamel with Arabic numerals, outer Arabic minutes ring and sunk subsidiary seconds. Blued steel “spade” hands. Gilt brass, the mainspring rolled around the winding shaft. Straight line lever escapement, cut bimetallic balance, Breguet balance spring.Signed on the dial and movement.Diam. 52 mm. Notes Very good example of this type of watch and in perfect condition which is rare.

Auctioneer:
Antiquorum
Date:
2000-04-02