Rare French gold verge watch with Republican calendar Circa 1800

Unsigned open faced Revolution calendar watch
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A Rare French 18 carat yellow gold open faced verge pocket watch with cockerel and Republican calendar from before 1838, Revolution early Empire period. This watch features an unsigned mechanical movement with a verge escapement, key winding, fusee and chain, and spiral. It has a white enamelled copper dial, unsigned, with three counters displaying black inscriptions for the hours, the names of the days of the week, and the days of the decades of each month. Additionally, there is a blue enamelled semicircle in gold lettering showing the abbreviation of each month according to the republican calendar.
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Diameter: 58 mm.
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Weight: 123 g
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Signed: No name
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Modified case with soldered pushrod, soldering marks, scratches, shocks, some crushing, and cracks on the back of the case. Glass is broken, two hands are missing, and there are chips at the keyhole. Movement is incomplete. No hallmark.
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The French Revolution calendar, also called the Republican calendar (French calendrier révolutionnaire français or calendrier républicain), was created as a result of the French Revolution of 1789 and was officially in use from 22 September 1792 to 31 December 1805. One month was divided into three decades of 10 days each. At the end of the year, five days were added, the so called supplementary days. The days of each decade were named with their Latin name: Primidi, the first day of the first decade; Duodi, the second day of the first decade; Tridi, the third day of the first decade; and Decadi, the 10th day. Sunday is our Decadi. So in the revolution calendar, unlike our four Sundays a month, there were only three Decadi! Due to the relatively short time during which this calendar was used, pocket watches with this indication are extremely rare.