Elegant Swiss platinum complicated dress watch Circa 1924

Platinum lever with perpetual calendar and moon phases by Audemars Piguet
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A fine, rare and elegant Swiss platinum open faced keyless lever dress watch with perpetual calendar and moon phases, circa 1924. Retailed by Allemann, Montreux. 1/2 SVF nickel finished lever movement, 19 jewels, bimetallic compensation balance. Silvered dial, applied white gold Arabic numerals, outer dot minute divisions, white gold Cathedral hands, four sunk subsidiary dials for month and leap year, day, date and constant seconds with moon phases and lunar calendar. Plain case, snap on back. Case numbered, dial signed by retailer, movement signed by watchmaker.
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Diameter: 46 mm
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Signed: Audemars Piguet