Fine French elegant art deco pendant pocket watch Circa 1920

Elegant art deco rock crystal, onyx and diamond-set pendant watch
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A fine French elegant art deco rock crystal, onyx and diamond-set keyless pendant watch, circa 1920, manual winding jewelled movement signed European Watch and Clocks Co Inc.
Silvered guilloché dial, painted Arabic numerals, blued steel hands, slim circular case, band nicely set with rose-cut diamonds, gilt Roman numerals to the black onyx bezel, rock crystal display case back, dial signed and case numbered.
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Diameter: 48 mm
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Signed: Cartier
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Similar examples are illustrated in Barracca, J.Negretti, G. & Nencini, F., Le Temps de Cartier, and Chaille, F. & Cologni, F., The Cartier Collection: Timepieces.

Cartier is a French luxury goods conglomerate company which 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.