English gilded coach watch for the Chinese market Circa 1780

Pair cased complicated coach clock by William Carpenter
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An English large gilded metal and enamel pair cased verge watch featuring jumping quarter seconds, moon age and phases, and a visible balance and regulator, made for the Chinese market, circa 1780. The watch features a gilded full plate movement, with the plate engraved overall in foliate scrolls and a verge escapement. It boasts a white enamel dial with an aperture for a paste set visible balance. It has six subsidiary dials indicating hours with Roman numerals, minutes, seconds, jumping quarter seconds, regulation, and moon age combined with phases. There are two cases: a gilded metal inner case with a winding aperture at the back, marked by the case maker FM, and a gilded outer case with a translucent blue polychrome enamel back, its bezels engraved with leaves and flowers.
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Diameter: 70 mm
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Signed: WM Carpenter, London
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The case is generally in good condition, exhibiting wear and surface scratches. It reflects prior to use, with the case back showing visible surface scratches to the naked eye. The deployment clasp shows similar wear. The dial is in overall good condition, and the movement is functioning correctly.