English Arnold type gold pocket watch chronometer Circa 1809

Open faced pocket watch by William Anthony
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A very rare and interesting English Arnold type chronometer from one of the most important English watchmakers, William Anthony, circa 1809.
18 carat pink gold case with casemaker’s punch William Webb, hallmarks London 1809 and an extravagant dome with visible balance; spring detent escapement in manner of John Arnold with cylindrical hairspring and screwed gold chatons; white enamel dial with Roman hours, sunk subsidiary dial for the constant seconds and pink gold hands. Movement signed and numbered.
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Diameter: 55 mm
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Weight: 153 g
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Signed: William Anthony London
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William Anthony (1765-1844) had his workshop at Red Lion Street, St. John’s Square, Clerkenwell. He was mainly specialized in making watches for the Chinese market. Similar to Barraud, he produced chronometers and the famous enamel watches. Pocket watch chronometers made by him are extremely rare.