Rare Swiss silver pair of duplex pocket watches Circa 1875

Set of silver watches for the Chinese market
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A pair of matching Chinese silver pocket watches with enamel dial a fine, pair of manual wind, silver center-seconds pocket watches with enamel dial, duplex escapement, made for the Chinese market, circa 1875. Finely engraved floral and scroll decorated silver jewelled key wound duplex movements. Hinged glazed display cuvettes.
White enamel dials with Roman numerals, blued steel spade hands and centre second hands. Chinese characters on the dial.
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Diameter: 46 mm
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Signed: No name