French 18 carat gold enamel verge pocket watch Circa 1810

Extremely rare decorative watch with box
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An extremely rare, decorative gold enamel verge pocket watch with box, circa 1810. 18k gold case, the glazed back cover with a very finely painted, opaque polychrome enamel portrait of a young beauty, wearing a veil against an engine-turned and cobalt blue enamelled background, half-pearl set crescent, Champlevé enamelled edges and pendant. Dial is enamel, Arabic numerals, Breguet hands. Full plate movement, extra flat, keywind, frosted, gilt, signed, chain/fusee, blued screws, circular pillars, verge escapement, three-arm brass balance, blued balance spring, fine florally engraved and pierced balance bridge, large silver regulator disc
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Diameter: 51 mm
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Weight: 77 g
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Signed: Le Bon à Paris