Swiss 18K yellow gold lever chronometer dress watch Circa 1920

Gold keyless open faced dress watch
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An elegant Swiss 18K yellow gold keyless lever chronometer dress watch, circa 1920.
A polished case, flat band, the back cover with engraved foliate monogram and a hinged gold cuvette. White enamel dial, Breguet numerals, outer minute track, subsidiary seconds and blued steel Breguet hands. A matte gilt movement, 17 jewels, wolf’s tooth winding, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, swan-neck micrometre regulator. Dial, case, cuvette and movement signed.
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Diameter: 49 mm
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Signed: Vacheron & Constantin  Genève