English gilded silver duplex for the Chinese market Circa 1840

Gilded silver, enamel and pearl pocket watch
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An English gilded silver, enamel and pearl key winding pocket watch made by William Watson in London, circa 1840. A round shaped pocket watch with center seconds, made for the Chinese market. Green and orange translucent enamel over guilloché case back with a white enamel geometric pattern representing a rosaceous motif. An engraved case band, the bezel, pendant and bow set with half pearls. A white enamel dial with Roman numerals, outer minute track with Arabic numerals at the quarters and blued steel hands. A mirror polished and blued steel Chinese style caliber movement, going barrel, duplex escapement, monometallic balance with blued steel wings, balance and blued steel flat hairspring, polished steel index regulator.
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Diameter: 64 mm
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Signed: William Watson, London