French 18K yellow gold key wind pocket watch Circa 1790

Gold open faced verge watch
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A French 18 carat yellow gold, key wind, open faced pocket watch made by Baltazar in Paris, circa 1790. It features a signed cock movement with a verge escapement. The white enamel dial displays Roman numerals for the hours, an outer railway minute track with Arabic numerals every five minutes, Louis XV style hands, and a winding square between 3 and 4 o’clock. The case is smooth yellow gold.
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Diameter: 50 mm
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Weight: 79 g
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Signed: Baltazar à Paris