Swiss minute repeating perpetual calendar watch Circa 1956

Rare gold minute repeating perpetual calendar watch with moon-phases
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A fine and rare 18k yellow gold open-faced minute repeating perpetual calendar watch with moon phases, circa 1956, cal. 17”’ manual winding damascened nickel lever movement, 31 jewels, repeating with two hammers on two gongs, adjusted to heat, cold, isochronism and 5 positions.
Matte silvered dial, applied gilt Roman and baton numerals, aperture for month, date and day below 12 o’clock, subsidiary dial at 6 o’clock indicating constant seconds combined with moon-phases, scooped bezel, snap on engraved case back, case, dial and movement signed, Extract from the Archives confirming sale in September 1956.
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Diameter: 49 mm
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Signed: Patek Philippe Genève