Fine and rare Swiss 18k gold complicated watch Circa 1947

Open faced complicated watch by Patek Philippe
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A fine and rare 18 carat gold open faced minute repeating perpetual calendar keyless lever watch with moon phases, circa 1947. Nickel finished lever movement, 29 jewels, mono-metallic balance, micrometer regulator, wolf’s tooth winging, minute repeating on two gongs activated by a slide in the band. Silvered matte dial, applied baton numerals, gold dauphine hands, aperture for combined month, day and date display and subsidiary dial for phases of the moon combined with constant seconds. Large plain case, stepped bezel, snap on back. Case, dial and movement signed. Comes with the original certificate.
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Diameter: 51 mm
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Signed: Patek Philippe Genève Swiss