Fine Swiss silver open faced lever pocket watch Circa 1910

Silver keyless pocket watch by Vacheron & Constantin
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A very fine Swiss, silver keyless pocket watch, circa 1910. A polished case, hinged silver cuvette engraved with the retailer’s information. Three-piece, white enamel dial with black Roman numerals, outer minute track, subsidiary seconds. Yellow gold spade hands. A frosted gilt movement, wolf’s tooth winding, 17 jewels, straight-line moustache lever escapement, cut bimetallic compensation balance with temperature and meantime adjustment screws, blued steel flat balance spring, index regulator. Dial and movement signed.
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Diameter: 50 mm
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Signed: Vacheron & Constantin  Genève