English centre seconds duplex for Chinese market Circa 1870

Gilt, enamel and pearl set duplex pocket watch by Just & Son 
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A fine and large English gilt, enamel and pearl set open faced centre seconds duplex pocket watch made for the Chinese market, circa 1870. Gilt movement, entirely engraved with foliate scrolls, Chinese calibre, freestanding barrel, duplex escapement, polished steel three-armed balance, flat balance spring, index regulator, diamond endstone. Gilt cuvette fixed to the movement ring. White enamel dial, convex, large narrow Roman numerals, outer minute and seconds divisions and original gold ovoid hands. Spring-loaded case back set with a painted-on enamel scene of Rinaldo and Armida, pearl set bezels, pendant and bow. Movement signed, case with faux English Hallmarks.
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Diameter: 58 mm
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Signed: Just & Son London