Audemars Piguet Openworked Extra thin Royal Oak Tourbillon (2012)

is is a special 40th anniversary edition, featuring the in house 2924 manual wind skeletonized movement, 70hours power reserve. Only 40pcs were made. One of the thinnest tourbillon movements in 2012 measuring only 4.46mm thick. The total thickness of the watch is a slim 8.85mm. The slate grey “dial” is a chapter ring with applied white gold markers; the rest are skeletonized the main plate and bridges of the movement. On the back, there is a Power Reserve indicator, showing you how much of the 70 hours is still available for use. Priced at 350K USD