English gold watch made for the Chinese market Circa 1820

Gold and enamel center seconds watch made for the Chinese market
–
An English yellow gold and enamel center seconds open faced watch made for the Chinese market, circa 1820, gilt Chinese calibre, duplex escapement, finely engraved with floral decoration, standing barrel, plain steel three-arm balance, index regulator.
White enamel dial, Roman numerals, center seconds, yellow gold case, champleve enamel to the rim, pendant and bow, partially translucent polychrome champleve enamel flower bouquet to the reverse, gold cuvette with foliate engraving , movement signed and numbered.
–
Diameter: 54 mm
–
Signed: Just & Son