Swiss 14 carat pink gold keyless pocket watch Circa 1920

Gold open faced lever watch
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A Swiss 14 carat pink gold open faced keyless pocket watch made by Paul Ditisheim in La Chaux-de-Fonds, circa 1920. A polished case with the engraved monogram CH on the back. White enamel dial with suspended Breguet hour numerals, outer minute track, subsidiary seconds at 6 and blued steel hands. Rhodium plated movement with a going barrel, straight line lever escapement, cut bimetallic compensated balance with gold poising screws and blued steel hairspring with terminal curve and polished steel index regulator, adjusted to isochronism and five positions. Signature on the dial, case and movement.
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Diameter: 45 mm
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Weight: 54 g
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Signed: Paul Ditisheim  La Chaux-de-Fonds