French gold, enamel and pearl-set verge pendant watch Circa 1780

Decorative open faced verge watch by Pierre Le Roy
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A fine French 18 carat gold, enamel and pearl-set open faced verge pendant watch, circa 1780. Frosted gilt full plate movement, fusee and chain, verge escapement, three-arm brass balance, flat balance spring, continental balance cock with polished steel endplate, silver regulation dial. White enamel dial with Roman numerals, outer minute track and Arabic five-minute numerals, damaged, pierced gold Louis XVI hands. Louis XVI case, hinged and sprung bezel set with split pearls, gold rope-twist band intertwined with pearls, the back with a panel of translucent royal blue enamel over spotted engine-turning, central pearl-set star and outer pearl-set border. Dial signed.
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Diameter: 39 mm
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Signed: Pre Le Roy à Paris