Pininfarina Hyperion dash-mounted watch from Girard-Perregaux

If someone has enough cash on hand to commission an entirely rebodied Rolls-Royce from one of Italy's most famous coachbuilders, you can bet he's not going to be wearing an off-the-rack watch, either. That's why Girard-Perregaux crafted the special timepiece you see here.

As we reported with the initial news of the Pininfarina Hyperion, this one-of-a-kind tourbillon is specially designed to be removed from its ivory leather wristband and mounted into the dashboard of the unique Rolls-Royce. Its meticulously-hand-crafted 30-jewel movement has 72 components but weighs less than a third of a gram, encased in 18-karat white gold with a face colored the same light blue as the Hyperion it was made to accompany. Like the one-off Hyperion is based on the Rolls-Royce Phantom Drophead Coupe, the watch is based on the Girard-Perregaux Vintage 1945 Tourbillon. But again, like the car, there was only one built.