Gold quarter repeating à toc et à tac verge watch Circa 1750

Gold open faced repeating verge by Michel Vieussieux
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Extravagant Swiss 18 carat gold open faced quarter repeating à toc et à tac verge pocket watch, circa 1750. High grade verge movement, repeating hours and quarters. White enamel dial with Roman hours and Arabic minutes, original hour hands, minute hand missing. Engine turned case, rare wind wheel design, the finest sound openings, with little button for repeating on bell or silent repeating on case. Cuvette and movement signed.
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Diameter: 50 mm
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Weight: 124 g
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Signed: Mch Vieussieux à Geneve
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Listed watchmaker around 1750.