Swiss 18 carat gold open faced lever pocket watch Circa 1900

Gold pocket watch with cartouche decoration
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Swiss 18 carat gold open faced pendant wind lever pocket watch by Zenith, circa 1920. The movement includes a pendant winding mechanism, bimetallic compensating balance, and lever escapement. The white enamel dial features Roman numerals, outer minute railway divisions, and a subsidiary seconds dial at 6 o’clock. The plain 18 carat gold case has a back decorated with a cartouche and a cuvette inscribed with technical details, Grand Prix Paris 1900, and medals.
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Diameter: 54 mm
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Gross weight: 129.5 g
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Signed: Zenith Chronomètre