Rare Swiss gold watch with jump hour digital display Circa 1920

Gold digital pocket watch by Audemars Piguet
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A fine and very rare Swiss 18 carat gold jump hour digital display open faced pocket watch together with platinum and gold chain and 9 carat gold match case, circa 1920. Retailed by Aspreys. 19-Jewel manual wind lever movement adjusted to 8 positions and numbered.
Silvered dial with separate apertures for hours and minutes, polished round case with snap-on monogrammed back GPC  and numbered, together with platinum and gold chain, and 9ct gold engine turned match case retailed by Aspreys, movement signed Audemars Piguet.
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Diameter: 44 mm
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Signed: Audemars Piguet