Rare Swiss gold quarter repeater with automaton Jacks Circa 1815

Gold and enamel open faced
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A rare Swiss 18 carat gold quarter repeating pocket watch with automaton Jacks in Empire costume, circa 1815. An Empire case, polished with a reeded band and polished bezel. Gilt metal cuvette hinged to the movement ring. Small white enamel dial with Breguet numerals, outer minute track and gilt Louis XV hands. Martin-Martine-type varicoloured chased gold Jacks of a lady and gentleman dressed in Empire costume on each side of the dial on a royal blue enamel background, appearing to strike the hours and quarters on two bells. Gilt brass movement, Lepine calibre with skeletonised and partly engraved bridges, free-standing barrel, flat balance spring, repeating on two gongs activated by depressing the pendant.
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Diameter: 59 mm
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Thickness: 18 mm
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Signed: Dubois  Swiss