Elegant Swiss gold skeletonized keyless dress watch Circa 1970

Gold lever glazed on both sides
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An excellent Swiss, elegant and thin, 18K yellow gold, skeletonized, keyless dress watch, circa 1970. A solid case stepped bezel and sapphire crystals. Transparent dial, plain outer reserve with painted radial Roman numerals. Black feuille hands. A gilt brass movement, skeletonized and hand-engraved, 20 jewels, straight-line lever escapement, monometallic balance, adjusted for heat, cold, isochronism and five positions, shock absorber, self-compensating flat balance spring. Case and movement signed.
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Thickness 4.5 mm.
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Diameter: 44 mm
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Signed: Audemars Piguet  Genève