Audemars Piguet Concept semi-skeletonised Turbillion, power reserve and Dynamographe indication, a rare and fine limited edition produced in 2004 Ref. 25980AI.00D3SU.01 Powered by a manual winding movement Cal. 2896, 36 jewels, Screw down button to activate neutral, winding and hands setting at 4 o'clock in the band, screw down crown, glazed display back secured by 8 screws, 44 mm. wide, 57 mm. overall length. #watches #audemarspiguet #royaloak