French 18K gold, enamel and diamond set verge watch Circa 1780

Gold watch with an ivory miniature in a protective case
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A very fine French 18 carat gold, enamel and diamond set pocket watch with an ivory miniature in a protective case, circa 1780. Andromache by Lépine in Paris, France. The protective polished case is glazed on the back. The case back centered by a navette shaped painted on ivory monochrome miniature depicting Andromache mourning Hector sitting in front of a vase on a pedestal surrounded by a rose cut diamond set frame, a translucent red enamel border, the bezels engraved in a repeated pattern, the front bezel and bow set with rose cut diamonds, a gilt brass hinged cuvette with an aperture for the balance cock.
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White enamel dial, radial Roman hours, an outer minute track with Arabic five minute numerals and elaborate rose cut diamond set hands. A frosted gilt full plate movement with cylindrical pillars, fusee and chain, verge escapement, micrometric potence adjustment, brass balance with flat balance spring, continental cock and silver regulation disc.
Dial signed.
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Diameter: 47 mm
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Signed: Lépine Invenit et Fecit Paris
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The former property of a Swiss Collector.