Swiss gold and enamel watch for the Chinese market Circa 1850

Gold duplex watch with centre seconds
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A very fine Swiss 18K gold, enamel and pearl-set centre seconds pocket watch with duplex escapement made for the Chinese market, circa 1850. Spring and Summer Bouquet by Bovet. A blue, red and white foliate enamelled band, the back finely painted on enamel with a bouquet of spring and summer flowers, pearl-set bezels, pendant and bow. Glazed cuvette hinged to the movement ring.
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White enamel dial, radial Roman hours, outer minute divisions with fifteen-minute Arabic numerals and blued steel spoon hands. Mirror polished steel movement, Chinese calibre with steel wheels and standing barrel, six jewels, ruby duplex escapement with ruby rest insert and steel impulse pallet, steel three-arm balance with blued steel wings, blued steel balance spring, index regulator. Movement signed.
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Diameter: 57 mm