Swiss gold repeater with chronograph and moon phases Circa 1910

Gold complicated calendar watch
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A Swiss 18 carat yellow gold minute repeating keyless pocket watch, circa 1910. With a triple-date calendar, chronograph and moon phases. A polished case with a hinged gold cuvette engraved with prize medals and technical details. White enamel dial with radial Arabic numerals, outer minute track and outermost fifths of a second division, subsidiary seconds dial and date dial, apertures for the days of the week, months and moon phases. Gilt Louis XV hands. Frosted gilt movement, 19 jewels, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, centrifugal governor, index regulator, repeating on gongs activated by a push-button on the band.
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Diameter: 57 mm
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Thickness: 18 mm
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Signed: Volta  Swiss