Swiss gold chronometer with spring detent escapement Circa 1900

Gold chronometer with day, date and moon phase
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A fine Swiss, hunting cased, keyless, 18K pink gold pocket watch with day, date, and moon phases, circa 1900. Hinged gold cuvette. White enamel dial with black radial Roman numerals, outer minute track, subsidiary dials for seconds, days of the week, and date, aperture for the moon phases. Blued steel spade hands. A frosted gilt movement, 19 jewels, spring detent escapement, cut bimetallic balance, blued steel Breguet balance spring, index regulator.
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Diameter: 52 mm
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Signed: No name