French multi colour gold open faced verge watch Circa 1780

Multi colour gold verge watch
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A French 18 carat multi colour gold open faced key wound verge pocket watch, circa 1780. Gilt full plate fusee verge movement, pierced and engraved balance bridge, silver regulation disc.
White enamel dial, black Roman numerals, black outer minute track with Arabic numeral 5-minute markers, winding aperture at 2, fancy stone set hands.
Consular case, applied gold and stone set decoration to reverse depicting a lute and a basket of flowers, stone set bezel. Signed movement.
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Diameter: 39 mm
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Signed: Jean Marchand