Swiss 18K gold quarter repeating keyless lever Circa 1880

Gold open faced repeater
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A fine and rare Swiss 18 carat gold open faced quarter repeating keyless lever pocket watch, circa 1880. Matte gilt movement, 27 jewels, a counterpoised straight-line lever escapement, cut bimetallic compensation balance, Breguet balance spring, index regulator, repeating on gongs activated by a slide on the band. A hinged gold cuvette. White enamel dial with Roman hours, outer minute divisions with Arabic five-minute numerals, subsidiary seconds at 6 o’clock and gold spade hands. A polished case, the back is engine-turned with an engraved monogram HJC, a flat band. Cuvette signed, movement numbered.
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Diameter: 49 mm
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Signed: Le Roy & Fils Hgers de la Marine Palais-Royal 13 & 15 Gal.ie Montpensier Paris