French 18K gold skeletonized verge pocket watch Circa 1780

Rare small skeletonized gold pocket watch
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A very fine, rare, skeletonized French verge pocket watch, glazed on both sides, circa 1780.
18 carat gold case with engraved band, gemstone set edging and large lateral hinge. Enamel dial with radial Roman hours, paste set and pierced hands. Skeletonized movement, hand-engraved, fire gilt and paste set, with chain/fusee, moulded pillars, a regulation device for flat balance spring, verge escapement and three-arm steel balance.
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Diameter: 40 mm
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Weight: 49 g
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Signed: No name