French gold open faced verge pocket watch with key Circa 1790

Gold pocket watch by Vauchez
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A French gold, open faced verge key wind pocket watch with key, circa 1790. This watch features a key wound gilt movement with a verge escapement. It features a white enamel dial with black Roman numerals, an outer minute track, Arabic five minute divisions, and a broken hand.
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Diameter: 43 mm
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Weight: 58 g
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Signed: Vauchez à Paris
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Vauchez (see also: Vauchez à Paris and Vaucher) is a French watch company. Vauchez à Paris operated in Paris from 1760 to 1800 and was founded by Daniel-François Vaucher. The watches produced during this period were marked Vauchez à Paris on the dial. Notable pieces from this family often bore the inscription Vauchez en la Cité on the movement. However, due to the style of the lettering, it’s possible that the mark might actually be an r rather than a z.”