some back story:
In 1965 Scott Bailey invited Bertone to have his say on the design of the popular Ford Mustang. The publisher of the prestigious “Automobile Quarterly” wanted to show that the Turin school of bodywork designers could achieve great things on cars which were very different from their usual projects. Bertone’s interpretation of the American car was put on show for the first time at the 1965 New York International Automobile Show, and was one of the most admired numbers: the Bertone model featured a radiator grille dominated by the emblem of the original car, while the disappearing headlamps were hidden behind the grille. All in all a very personal interpretation which turned out to be another coup in image terms for the Turin designer.
Nice find! Looks like a stretch out Alfa Giulia (1750-2000).