French 18K gold and enamel verge pocket watch Circa 1775

Gold open faced pocket watch by Bartholony
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A very fine, rare French gold and enamel verge pocket watch, circa 1775.
Full plate fire gilt movement, keywind, chain and fusee, squared baluster pillars, three-arm brass balance, fine florally engraved and pierced balance bridge.
White enamel dial with radial Roman hours, Arabic five-minute numerals and gold Louis XVI hands. 18K gold case, engraved bezel with applied polychrome opaque and translucent enamel roses, the back with an engraved stripe pattern, applied enamel roses and military equipment, framed by a blue translucent enamel ribbon and bow, diamond thumb piece, diamond-set pendant and large lateral hinge. Movement signed.
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Diameter: 46 mm
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Weight: 75 g
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Signed: Bartholony à Paris
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Abraham Bartholony worked as a watchmaker in Paris from 1750. He was probably the son of Amed Bartholony who came from Geneva and was married to Genevieve Mitoire, who was a family of Pierre Mitoire. As a maker, he was also a supplier for Julien Le Roy’s workshop. Abraham Bartholony was possibly related to Daniel Bartholony. Abraham probably signed his watches with ‘Bartholony à Paris’, but there are also watches signed with ‘Bartholony l’Aîné’. The present watch is possibly from Abraham Bartholony but it can also be from Daniel.