Audemars Piguet. A fine and rare 18ct gold wristwatch with visible one-minute tourbillon regulator and oscillating weight


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Tourbillon Automatique, Ref:25643, Case No.152, Circa 1988
32-jewel hand engraved movement with straight-line lever escapement, visible one-minute tourbillon regulator with titanium cage, mono-metallic balance, self compensating flat balance-spring, yellow gold dial with embossed "Sun Ray" pattern, gold dot indexes for the hours, apertures for the visible tourbillon regulator with polished steel bridge at 11 and at 6 for the oscillating weight with the initials "AP", black oxidised gold hands, fitted leather strap with 18ct gold deployant clasp, case, dial and movement signed

29mm x 33mm.