Fine French platinum and diamond set lever ladies’ watch Circa 1920

Platinum small octagonal watch
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A French platinum and diamond set ladies’ pocket watch made by Cartier in Paris, circa 1920. The manual winding movement with a lever escapement and 18 jewels. Silver, engine turned dial with Roman hour numerals and blued heavy moon hands. The snap on back of the octagonal shaped case with a central, diamond set monogram and bezel, a smooth front and the bow also set with diamonds. Dial and movement signed, case signed and numbered. Comes with the original presentation box.
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Diameter: 28 mm
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Signed: Cartier