Very rare Swiss 18k white gold skeletonized lever Circa 1975

Skeletonized pocket watch by Audemars Piguet
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A fine, very limited and rare 18 carat white gold and diamond (1.9ct) set open faced skeletonized manual wind pocket watch, circa 1975. Dial signed, case and movement signed and numbered. Comes with a pouch.
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Diameter: 47 mm
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Signed: Audemars Piguet