Rare Swiss perpetual calendar with moon phases Circa 1890

A rare Swiss rose gold open faced perpetual calendar keyless pocket watch with moon phases, circa 1890. Jewelled gilt lever movement, wolf’s tooth winding, bimetallic compensation balance. Signed and numbered gold cuvette. White enamel dial, Roman numerals, outer Arabic minute divisions, subsidiary dials for day, date, month combined with year indicationin French and constant seconds combined with aperture for moon phases. Polished case. Cuvette and dial signed and numbered.
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