Extremely fine Swiss 18k gold complicated watch Circa 1971

Gold open faced repeating lever with complications by Audemars Piguet
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An extremely fine, rare and slim Swiss 18 carat gold open faced minute repeating perpetual calendar split seconds chronograph keyless watch with moon phases, circa 1971. Mechanical movement, 36 jewels, bimetallic compensation balance, swan neck regulator. Silvered dial with applied baton numerals, outer Arabic five minute divisions, four subsidiary dials for month and leap year indicator and 30 minute register, day, date, constant seconds and moon phases. Plain case, stepped bezel, repeating slide in the band, snap on back, split seconds chronograph mechanism operated through a button in the band and through the crown. Case, dial and movement signed, case and movement numbered.
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Diameter: 48.5 mm
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Signed: Audemars Piguet