Unusual Swiss octagonal white gold pendant watch Circa 1981

White gold keyless lever by Audemars Piguet
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A rare and unusual Swiss octagonal 18 carat white gold keyless lever pendant watch, circa 1981. The Royal Oak model. Mechanical movement. Black textured dial with baton numerals. Octagonal case with screwed bezel, winding crown at 12 o’clock, engraved Royal Oak to the back, snap on the back. Case, dial and movement signed, case and movement numbered.
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Diameter: 44 mm
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Signed: Audemars Piguet Swiss