Slim Swiss gold duplex keywinding pocket watch Circa 1855

Gold open faced pocket watch
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A slim Swiss 18 carat yellow gold open faced keywinding pocket watch, made by Hudryl in Geneva, circa 1855. A solid, polished case, with an engine turned case back. white enamel dial with radial Roman numerals, outer minute track, subsidiary seconds at 6 and blued steel hands. A gilded brass movement, going barrel, duplex escapement, polished steel single wheel, gold escape wheel counter pivot plate, cut bimetallic compensated balance and blued steel flat hairspring, diamond end stone, polished steel index regulator. Signature on the cuvette.
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Diameter: 45 mm
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Signed: Hudryl  Geneva
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Accompanied by a fitted box and key.