Piece unique with confirmation from IWC stating that this was the only platinum stone set piece of the 4 (one yellow, one pink, one white). Though a total of 125 were made for the 125th anniversary, this example in addition to its unique sapphire bezel, has a unique blue enamel dial. At the time of production in 1993 this was the most complicated wristwatch in the world incorporating perpetual calendar,split second chronograph minute repeater and tourbillon. Supplied with additional leather strap and original buckle as well as it's original bracelet, it was made for the Sulan Of Brunei, who was obviously ahead of his time now collectors are looking outside the usual brands for investment opportunity's.