English polished 18 carat gold lever pocket watch Circa 1820

Gold gentleman’s lever pocket watch
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A fine, English, 18 carat gold key wind open faced gentleman’s pocket watch, circa 1820. Gilt full plate English lever, three-arm balance, engraved balance cock inscribed patent on the foot, diamond end stone and inner dust cap
White enamel dial, black Roman numerals, black outer minute track, subsidiary seconds at 6, gilt spade hands.
Polished consular case with foliate engraved bezels and bow. Movement signed.
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Diameter: 48 mm
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Signed: William Robinson, Liverpool
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Probably William Robinson. Liverpool (Lancs) circa 1780-1824.