French/Swiss platinum keyless lever dress watch Circa 1925

Platinum pendant watch by Cartier and European Watch & Clock Co. Inc.
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A large French/Swiss platinum open faced watch with a contract case, circa 1925. The watch has a nickel-finished 16″ ligne movement with 19 jewels and is signed by the European Watch & Clock Co., Inc. The dial is silvered and bears the signature of Cartier. It features Roman radial hours, an outer minutes track, and blued steel hands. The platinum case has a snap-on black enamel monogrammed case back and a triangular bow.
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Diameter: 49 mm
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Signed: Cartier and European Watch & Clock Co. Inc.
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The contract case is unmarked, unsigned, and unstamped. The case is in good overall condition with wear, surface scuffing, and nicks along the knife edge. The dial has been refinished, showing wear and surface spots. There is wear and light patina on the hands. The movement is operating, but the crown winds with some difficulty and will likely require service at the purchaser’s discretion.
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The European Watch and Clock Co. Inc. was established in the 1920s as a collaboration between Cartier and Edmond Jaeger of the LeCoultre & Cie watch factory. Cartier worked with various watch movement manufacturers, including Vacheron Constantin, Audemars Piguet, and Movado, but many of their top products featured movements from the European Watch & Clock Company, which were manufactured at Jaeger-LeCoultre’s Le Sentier factory in Switzerland. The watch cases were made in Paris, Geneva, London, and New York, with each branch responsible for its production. However, the French branch also exported its watches to other stores. In 1930, Jaeger partnered with Jacques-David LeCoultre to form Jaeger-LeCoultre. In the 1920s, Henri Rodanet, the technical director of the Etablissements Ed. Jaeger, developed the Calibre Duoplan, one of the smallest movements with high accuracy.