Swiss gilt metal watch made for the Chinese market Circa 1870

Gilt, enamel and pearl set watch
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A Swiss unsigned small key winding pocket watch with centre seconds made for the Chinese market, circa 1870.
Gilded metal round-shaped case. Case back with orange flinqué enamel, translucent enamel over guilloché engine turned, with polychrome painting on enamel, by an unidentified workshop, probably Geneva, showing a young Western woman, in bust, looking to the right, fluted case band, bezels, pendant and bow set with half-pearls.
Gilded brass movement, engraved Chinese-style, with going barrel, duplex escapement, monometallic balance (polished steel), blued steel wings balance, and blued steel flat hairspring.
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Diameter: 39.5 mm
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Signed: No name