The IWC Portuguese Tourbillon Mystère Squelette IWC decorated what is essentially a very complex movement; an IWC-manufactured 5000 calibre. Along with having the time and date, this watch includes a tourbillon escapement and a seven day power reserve, which is a lot for an automatic watch. There are further items of interest in the movement which represents a pinnacle of what IWC can achieve, but I will leave it at that. You could argue that the level of detail in the IWC decoration is above that of the Patek Philippe. You'd be correct, but they repersent different styles. The 150 IWC Portuguese Tourbillon Mystère Squelette watches (50 in Platinum, 50 in rose gold, 50 in white gold) will (or were) be given to Jochen Benzinger whose shop hand machines each watch meticulously with special "engine tuners." While the 44mm Portuguese case remains clean and solid, Benzinger goes to work on every square millimeter of the movement with an impressive level of detail and attention. The decorations seems to frame the flying tourbillon, and the small subdials for the date and seconds. Turn the watch over, and you'll notice a typical Benzinger style decorated rotor with the IWC logo painstakenly applied to the a gold section on the rotor.