Swiss 18k gold minute repeating hunting cased pocket watch Circa 1900

Gold lever with a triple date calendar, chronograph and moon phases
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A very fine Swiss, 18K yellow gold, keyless, minute repeating pocket watch, circa 1900. With a triple date calendar, chronograph and moon phases. Hinged gold cuvette engraved with the technical details. White enamel dial with radial Arabic numerals, outer minute track and fifths of second chronograph divisions, subsidiary dials for the date, apertures for days of the week the months, and the seconds with inner moon phase aperture.
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Gold spade hands. A rhodium-plated movement, 25 jewels, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator, repeating on gongs activated by a push-button in the band, chronograph with visible work activated by a push-button in the crown. Cuvette and movement signed “Clinton Extra”, case number.
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Diameter: 54 mm
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Signed: Leon N. Robert  Chaux de Fonds
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The case and movement are slightly scratched.