French gold, enamel and diamond decorative watch Circa 1790

Gold verge pocket watch by Robin
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A decorative, French gold and enamel verge pocket watch studded with paste-set diamonds, circa 1790. The back is decorated with translucent Imperial blue enamel over sunray engine-turning with rose-cut paste-set applied rosette, gold and coloured paillon border, paste-set bezel and border. Hinged gilt cuvette fixed to the movement ring. White enamel dial, upright Roman numerals, outer minute divisions. Paste-set pierced hands.
A gilt brass full plate movement, fusee and chain, verge escapement with micrometric potence adjustment, three-arm brass balance, flat balance spring, engraved continental cock with polished steel endplate, index regulator on a silvered plate. Dial and movement signed.
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Diameter: 50 mm
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Signed: Robin  Paris