French Art Deco octagonal pendant watch with diamonds Circa 1915

Rare gold, platinum and enamel pendant watch by Cartier
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A French, gold, platinum, enamel, keyless winding, octagonal shaped, Art Deco pendant watch with diamonds and open face, circa 1910-1920.
18 Carat yellow gold platinum case with Vieux rose (light rose) and orange flinqué enamel (translucent enamel over guilloché engine turned) case back, with, in the centre, rosacea of rose cut diamonds. Silvered dial with Arabic numerals, outer minutes track, and skeletonized hands. Rhodium plated movement with going barrel, straight line lever escapement, compensated balance with gold poising screws, and blued steel flat hairspring.
Dial, case and movement signed.
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Diameter: 46 mm
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Signed: Cartier
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Cartier is a French luxury goods conglomerate company that designs, manufactures, distributes, and sells jewellery and watches. Founded in Paris, France, in 1847 by Louis-François Cartier, the company remained under family control until 1964. The company maintains its headquarters in Paris.