Swiss silver duplex watch for the Chinese market Circa 1850

Silver watch with enamelled Tixier movement
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Rarity, an extremely rare, big pocket watch for the Chinese market, enamelled Tixier movement by Pelaz, Fleurier, circa 1850. An original silver case with Chinese signature, glazed movement, extremely rare enamelled bar movement with duplex escapement, big flying barrel, original enamel dial, Roman numerals, centre seconds, blued steel hands, movement intact, beautiful Jean Tixier à Fleurier/Pelaz design.
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Diameter: 62 mm