This exceptionally rare Audemars Piguet Royal Oak Tourbillon was released in celebration of the Royal Oaks 25th Anniversary in 1997. It is believed that only five of these watches were produced in platinum. This beautiful Royal Oak features a hidden crown on the caseback and a vibrant purple dial with a tourbillon display. The movement is the famous self-winding tourbillon calibre 2875. This watch is in fantastic original condition with minimal to no wear.