French decorative ultra-thin gold and enamel pocket watch Circa 1790

Elegant pocket watch with open face by Jean Gregson
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An elegant, decorative and thin French yellow gold and enamel directoire pocket watch, circa 1790.
Round-shaped case, the back painted on enamel by an unidentified Genevan workshop, showing two young women talking to each other, one of whom has a partially stripped chest, near a peacock, on royal blue flinqué enamel, in a neoclassical décor of paillons, invisible hinges. White enamel dial with Arabic radial hours, outer minutes track with Arabic fifteen minutes numerals, and gold filigree hands. Full plate, gilded brass movement with fusee and chain, verge escapement, key-winding, gilt-brass monometallic balance, blued steel flat hairspring, pierced and engraved gilded continental cock. Dial and movement signed.
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Diameter: 54 mm
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Signed: Gregson A Paris
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Flinqué enamel is translucent enamel over guilloché engine-turning.
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Jean Gregson, Paris (1776-1790)
Watchmaker Jean Gregson from England was active in Paris in the second half of the 18th century. He did not demand mastery but obtained, in 1776, the title of “Marchand Horloger Privilégié du Roi Suivant la Cour et Conseils de Sa Majesté” (Watchmaker of the King), although foreign and protestant. Jean Gregson seems to have left France at the time of the Revolution. He is no longer mentioned in Paris after 1790. He was previously established at rue Dauphine and signed his watches: Horloger du Roy or Horloger de la Cour de France.