Swiss platinum and diamond-set keyless dress watch Circa 1920

Platinum keyless lever with diamond-set fob
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A very fine and elegant Swiss, platinum and diamond-set keyless dress watch with a platinum and diamond-set fob and first quality movement, circa 1920. A brushed case, the bezel and bow with round white diamonds. Matte silver dial with polished Arabic numerals, outer dot minute divisions, subsidiary seconds. White gold cathedral hands. First Quality, rhodium-plated movement, Geneva striping decoration, straight-line lever escapement, cut bimetallic compensation balance adjusted, blued steel Breguet balance spring, swan-neck micrometre regulator. Movement numbered.
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Diameter: 43 mm
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Signed: No Name