French 18k gold, enamel and pearl-covered dial pendant watch Circa 1820

Gold verge with mirrored sides
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An attractive, full hunter, gold, enamel and pearl-covered dial pendant watch, circa 1820. Sprung hinged, mirrored front and reverse with royal blue enamel central plaque over engine-turning to pearl-set outer, enamel repeated on the inside case to the inner front and reverse. White enamel dial, Breguet numerals, outer minute track, aperture for winding at two positions. Blued steel hands. Gilt full plate movement, turned pillars, fuse barrel, verge escapement, pierced and engraved continental cock with steel endplate, regulator dial.
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Thickness: 11 mm
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Diameter: 32 mm
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Signed: No Name  (probably French)
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The case is restored and the hands are partially replaced.