Swiss gilt metal and enamel open faced verge Circa 1780

A Swiss gilt metal and enamel open faced key wind pocket watch, circa 1780. Gilt full plate movement with fusee verge escapement pierced and engraved balance bridge, silver regulation. White enamel dial with black Arabic numerals, black outer minute divisions, winding aperture at 3, gilt beetle and poker hands. Hinged consular case, blue enamel reverse depicting a young lady in pink and white with a bag beside a stone set arch, seed pearl set bezel. Dial signed, movement signed and numbered, case numbered.
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Diameter: 42 mm
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Signed: Abraham Amalric Genève