Decorative French gold and enamel pocket watch Circa 1790

Gold verge decorated with filigree and opals
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A decorative French 18 carat gold, enamel and opal set keywinding pocket watch, made by Gregson in Paris, Circa 1790. Case back with a scene showing a battle between European and Ottoman soldiers, the painting on enamel on gold by an unidentified Genevan workshop, the border with geometrical paillon decoration, the bezels with filigrane décor set with half opals and the case band is engraved in taille douce (fine-cut). White enamel dial with Arabic numerals, and Breguet yellow gold hands. A full plate, gilded brass movement, with fusee and chain, verge escapement, gilded brass monometallic balance and blued steel flat hairspring, pierced and engraved gilded continental cock. Signature on the dial and movement.
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Diameter: 49 mm
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Signed: Gregson  Paris
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Accompanied by a brass winding key.
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Gregson, Jean, Paris (1776-1790). Watchmaker from England, Jean Gregson, was active in Paris in the second half of the 18th century. He does not demand mastery but obtains, in 1776, the title of Marchand Horloger Privilégié du Roi suivant la Cour et Conseils de Sa Majesté, whether 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 is previously established rue Dauphine and signs his watches: Horloger du Roy or Horloger de la Cour de France.