Rare Swiss 14k pink gold double dialled watch Circa 1870

Gold double dialled watch with moon phases and calendar
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A rare Swiss 14k pink gold double dialled open faced watch with moon-phases and concealed skeletonized calendar display, circa 1870, gilt jeweled lever movement, the front enamel dial with Roman numerals, blued steel spade hands, moon-phase aperture, large subsidiary seconds, engine-turned case opens to reveal skeletonized movement, bordered by white enamel chapter ring indicating day and date, stylized blued steel hands, levers to adjust calendar beneath the bezel, unsigned.
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Diameter: 52 mm
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Signed: No name