English clock with date for the Ottoman market Circa 1800

Open faced coach clock with 3 cases by George Prior
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An English extravagant coach clock with date and three cases for the Ottoman market, circa 1800.
Three cases: protective gilt silver case in shell shape, 2nd case with tortoiseshell and pin decoration and 3rd gilt case; signed verge movement with Ottoman signature; splendid and extravagant enamel dial with golden decoration, signed time indication on the right, hand date on the left, Ottoman inscription and blued steel hands.
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Diameter: 75 mm
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Weight: 220 g
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Signed: G. Prior London