Ferrari‘s NART Spider (which stands for North American Racing Team) is one of the rarest drop-top Ferraris and was only ever produced with 10 cars worldwide. This particular 275 GTS/4 NART Spider was the last off the line, and was the only one of its kind that was sold new in Europe, specifically Madrid. The model still retains its original 300-horsepower Colombo V12 engine but the owner’s swapped its old Grigio Scuro shade of medium grey from the factory to a bold red paint job. A similar NART Spider estimated at a lower value auctioned for $27.5 million USD so reports are speculating this car to fetch a similar amount when it hits the auction block May 14th.SOURCE AUTOBLOG