Reference 25980AI.OO.D003SU.01 Royal Oak Concept | A limited edition alacrite semi-skeletonised tourbillon wristwatch with dynamographe and power reserve indication, Circa 2005 Dial: semi-skeletonised Caliber: cal. 2896 mechanical, 36 jewels Movement number: 543'743 Case: alacrite, titanium bezel, sapphire crystal display back secured by eight screws Case number: E 88'193 Closure: stainless steel Audemars Piguet folding clasp Size: 44 mm diameter Signed: case, dial and movement Box: no Papers: yes Accessories: Audemars Piguet Certificate of Origin (undated), and Royal Oak Concept book
