Swiss centre seconds watch for Chinese market Circa 1860

A Swiss silver gilt, enamel and split pearls open faced centre seconds pocket watch made for the Chinese market, circa 1860. Finely engraved and chased floral decorated gilt finished movement, lever escapement. Hinged glazed cuvette. White enamel dial, Roman numerals, outer minute track and centre seconds. Circular case, split pearl set bezels and bow, milled band, case back with painted polychrome enamel depicting a shepherdess in a landscape on a blue background.