French 18k gold rare and ultra thin pocket watch Circa 1920

Open faced watch by Cartier / European Watch and Clock Co. Inc.
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A French rare and ultra thin gentleman’s pocket watch, circa 1920.
18 carat gold polished case with push back and dome signed “European Watch and Clock Co. Inc.France“. Silvered engine turned dial with Arabic numerals, blued Breguet hands and signed “Cartier France“. Bridge movement, rhodium-plated, with “fausses côtes” decoration, 8 adj., 19 jewels and gold screw compensation balance.
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Diameter: 44 mm
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Weight: 46 g
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Signed: Cartier France / European Watch and Clock Co. Inc. France