Swiss 18k white and yellow gold keyless watch Circa 1920

Gold lever with a special silver dial
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A fine, thin Swiss, 18K white and yellow gold keyless pocket watch with an unusual dial, circa 1920. Yellow gold scroll engraved bezel, white gold back cover with a yellow gold scroll engraved border and applied yellow gold monogram, trefoil bow. Dedicated hinged gold cuvette. Silver dial with foliate centre, radial Arabic numerals on white enamel reserves, outer minute track. Blued steel Cathedrale hands. A rhodium-plated movement, 18 jewels, wolf’s tooth winding, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator. Movement signed. Property of an Italian Collector.
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Diameter: 45 mm
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Signed: Vacheron & Constantin  Geneva