Early English gold and enamel cylinder watch Circa 1710-1730

Gold and enamel key wound watch in pair cases by George Graham
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An early English 18 carat gold and enamel pair cased key wound cylinder watch, circa 1710-1730. Full plate gilt finished cylinder movement, chain fusée, pierced and engraved balance cock, diamond end stone, three armed balance, metal dust cover, silvered regulator disc, Egyptian pilasters. White enamel dial with Roman numerals, outer calibrated minutes track. Polished inner case, outer case engine turned and engraved, the back with blue translucent guilloché enamel background to the center, gilt, green and white enamel vase, surrounded by a white enamel and gilt border, further surrounded by a green enamel leaf motif and blue enamel ribbon, both back rim and bezel with blue and white enamel geometric design. Cuvette and movement signed, movement and case numbered, outer case stamped DA.
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Diameter outer case: 59 mm
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Signed: George Graham London