French gold and enamel open faced verge watch Circa 1790

A French gold and enamel open faced verge pocket watch, circa 1790. Gilt full plate verge movement, pierced and engraved balance bridge. White enamel dial and Arabic numerals with outer minute track. Case back with en grisaille enamel depicting a couple courting in a landscape surrounded by a translucent blue enamel on a sunburst guilloché background, both bezels with floral decoration on a white background. Movement signed.
–