Swiss 18K gold repeating virgule Lépine watch Circa 1820

Gold open faced quarter repeater
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A large and very fine Swiss 18 carat gold open faced quarter repeating virgule Lépine pocket watch with striking mechanism, circa 1820. Rare movement quality, repeating the hours and quarter hours, square-shaped gong, virgule escapement. White enamel dial with Arabic hours and outer minute divisions, blued steel Breguet hands. Engine-turned case, reeded band. Case numbered.
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Diameter: 55 mm
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Weight: 100 g
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Signed: No name