French 18K gold miniature verge with pearls Circa 1790

Black enamel Chinese decoration on back
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An 18 carat miniature gold/enamel verge watch with pearls on both sides, circa 1790.
Black enamel on back, Chinese decoration with pearls on both sides. Miniature verge movement, original enamel dial in very good condition, original gold hour hand.
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Diameter: 26 mm
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Signed: Guex  Paris
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Small restoration on case, movement needs service.