English remarkable gilt watch with centre seconds Circa 1780

Open faced pocket watch for the Chinese market by William Vale
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A remarkable splendour English pocket watch with centre seconds, for the Chinese market, circa 1780.
Brass gilt case with florally engraved bezels, a border of inlaid white, green and red ornamental stones and a glazed back lid. Enamel dial with radial Roman hours, large lateral hinge and gold heart hands. The back of the dial with Chinese letters regarding a restoration on 07/18/1883 during the Qing-Dynasty. Full plate movement, keywind, firegilt, pierced and lavishly florally engraved, crown wheel with horizontal and vertical teeth, verge escapement, three-arm steel balance, fine florally engraved and pierced balance bridge with regulator.
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Diameter: 77 mm
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Weight: 242 g
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Signed: William Vale, London
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An almost identical watch is located at the permanent collection of the Palace Museum in Beijing, depicted and described in the book “The high quality watches of the Qing dynasty”, written by Bailin Qiu and YianzhingLu, Unicorn Books Limited Beijing 1995, Page 132.