English verge watch with regulator calendar dial Circa 1790

Multi dial gilt Chinese market verge
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An English verge by Brockbank with regulator calendar dial in stone set gilt metal pair cases, circa 1790. Full plate fire gilt movement with signed and numbered gilt dust cover. Pierced and engraved masked cock, silver regulator disc. Fusee and chain. Plain three-arm steel balance, blue steel spiral hairspring. White enamel regulator dial with two extra subsidiaries for the age of the moon and day of the month. Central gold arrow hand for the minutes of Arabic numerals, the hours at twelve with Roman numerals and continuous seconds below. Gilt pair cases, plain gilt inner case. The outer with chased and engraved gilt bezels, each set with a single row of green and red stones. The back set with a restored scene of a spilt basket of fruit and birds. Concealed hinge.
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Diameter: 57 mm
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Depth: 14 mm
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Signed: J Brockbank London
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A late 18th Century example of a watch made for sale on the Chinese market.