French gold and enamel open faced Louis XV watch Circa 1775

Gold decorative pocket watch
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A fine French gold and enamel open faced verge Louis XV pocket watch, circa 1775. Verge movement. The case back with translucent dark blue enamel over an engine-turned ground decorated with gilt stars and a concentric row of white enamel faux pearls, an engraved bezel with decorative translucent dark blue champlevé enamel foliage. Movement signed and numbered.
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Diameter: 42 mm
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Signed: Delaruelle à Paris