One of the most significant postwar Alfa Romeos in existence, the Pinin Farina-styled show car debuted at the 1956 Torino Auto Show and was also displayed at Paris and Geneva. Well-documented and owned by the same collector for 40 years, the car is powered by a 3.5-liter straight-six engine with six individual Weber carburetors. Not that anyone is looking past all that glass.