Rare French gold and diamond-set ring watch Circa 1780

Gold ring watch set with diamonds
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A rare French 18 carat gold and diamond-set ring watch, circa 1780.
Thin, gilt cylinder movement. White enamel Louis XV dial with Roman hours and Arabic five minutes, gold Breguet hour hand, replaced minute hand, signed Dosenbach à Paris. Plain case, the bezel set with diamonds. Dial signed by the retailer. Comes with the original box and key.
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Diameter: 17 mm
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Diameter of the ring: 17 mm
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Weight: 6.5 g
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Signed: Dosenbach à Paris