The Lamborghini 350 GTV was the prototype and forerunner of the later 350 GT (Lamborghini´s first production model).
It featured a controversial semi-fastback body design by Franco Scaglione, which was modified for series production by Carrozzeria Touring, and Lamborghini’s own 3.5 liter V-12 engine. The car was presented to the public on the 1963 Turin Auto Show.
Source: Wikipedia