French gold and enamel hunting cased verge watch Circa 1770

Gold verge with painted on enamel scene by Ferdinand Berthoud
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A fine French gold and enamel hunting cased verge pocket watch, circa 1770. Hinged gilt-brass full plate movement with wide tapered cylindrical pillars, fusee with chain, verge escapement with micrometric potence adjustment, plain brass three armed balance, flat balance spring, pierced and foliate chased continental type balance cock with polished steel end piece, silver regulation dial. White enamel dial with Roman numerals, outer minute track and Arabic five minute numerals, winding aperture at 2 o’clock, original pierced gold hands. Case with hinged and sprung front cover decorated with an oval painted on enamel panel depicting Venus at the altar of love, border decorated with green and white stylized enamel leaves, the back decorated with a scene of Cupid and doves by the altar of love, border decorated to match the bezel, release catch in the pendant. Dial and movement signed.
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Diameter: 43 mm
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Signed: F. Berthoud à Paris Swiss