First available in 1957, the Giulietta Sprint Speciale, styled by Bertone, has a low drag coefficient of just 0.28 — better than a new Corvette.  These are true racing cars designed to compete against the dominant Porsche 356.   More pictures here from seller.  This particular car was fully restored by Custom Classics in California, and has its original, numbers matching engine.  Only 1,366 Giulietta Sprint Speciales were built and not many are still around.  See link at right for Motoreum in NW Austin.