This Porsche 356 Speedster has a set of special high-performance options, including a racing-derived engine. It has lightweight alloy body panels, a special louvered deck lid and Plexiglas windows. This car is believed to have been exported to the U.S. and raced here in the late 1960s and early '70s.

Seinfeld bought the car in 2012, shortly after it was thoroughly restored, and has driven it regularly. Still, it remains in top-quality condition, according to Gooding & Co.