English gold à toc quarter repeating verge watch Circa 1740

Two colour gold open faced quarter repeater by George Graham
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A fine English 18 carat two colour gold open faced à toc quarter repeating verge watch, circa 1740. Keywound verge movement, finely engraved and pierced balance cock and foot, diamond endstone, à toc quarter repeating on two hammers onto the case. Later white enamel dial with Roman numerals. Later engine turned case, chased and engraved two colour gold foliage decorated bezel and rim, the back centred by two colour gold initials, repeating through the pendant. Movement signed and numbered, case stamped JAA for Jean-Augustin Alban and with Paris date letter for 1775-1776.
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Diameter: 49 mm
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Signed: George Graham London