French 18K gold and enamel verge pocket watch Circa 1780

Diamond and pearl verge pocket watch
–
A very fine diamond and pearl set gold enamel verge pocket watch, circa 1780. 18k gold case, on reverse side costly engine-turned and translucent green enamelled, the edge set with half pearls and diamonds framed by a blue enamel border, pendant with white and blue enamelled ornaments. Dial is enamel, radial Roman numerals, opened Breguet hands. Full plate movement, keywind, frosted, gilt, blued screws, round movement pillars, three-arm brass balance, blued balance spring, fine florally engraved balance bridge, silver regulator disc.
–
Diameter: 52 mm
–
Weight: 82 g
–
Signed: Jacob Valérel à Paris