Rare French 18K gold skeletonized verge watch Circa 1770

Gold watch glazed on both sides
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A very fine and very rare French, 18K gold, paste-set skeletonized pendant watch, circa 1770. A Louis XV case, glazed on both sides, paste-set bezels, band engraved in a repeated pattern. White enamel dial, radial Breguet numerals, outer minute divisions, Paste-set hands. Hinged, gilt movement, skeletonized plate with chased and engraved scroll and crown decoration covered with white gold and diamonds, fusee and chain, verge escapement, brass balance with three swirled arms, flat balance spring, triangular singlefooted solid engraved cock, index regulator.
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Diameter: 39 mm
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Signed: No Name
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The case has some Lacking elements.