Swiss 18K gold keyless double-dialled pocket watch Circa 1880

Gold hunter with moon phases and triple date 
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A rare Swiss 18K gold keyless double-dialled pocket watch, circa 1880. With phases of the moon and triple date calendar. Front dial: white enamel with radial Roman numerals, outer minute track and large Arabic five-minute numerals, subsidiary seconds. Paste-set gold arrow hands. Back dial: matte silver and gilt, outer rotating days of the week, inner date, apertures for the months with their respective number of days and moon phases and blued steel hand. A rhodium-plated movement, 15 jewels, counterpoised straight-line lever escapement, cut-bimetallic compensation balance, blued steel Breguet balance spring, and an index regulator, Case signed.
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Diameter: 50 mm
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Signed: J. Wyss  Chaux-de-Fonds