This should be one of the rare Giulietta Spider Veloce swb, recognizable by the absence of the door deflector glass, because the doors were shorter on these early cars. Indeed, many say the 750 are swb but it is not correct: all swb were type 750 but not vice versa, and the Fast sws are very rare. Of this however, the seller has posted only a couple of photos from the outside and no details on the chassis number that would be interesting to know.
Externally, the car does not look strange, if not for the wheels, wider than the standard, rims that are reproductions of the Tecnomagnesio used on the Alfa TZ and TI Super, and the absence of the bumpers. In addition, the seller says that the car is currently equipped with a 1750 cc engine but the correct engine and Weber DCO3 carburettors (very expensive) are available. Find it for sale at $70,000 here in Pasadena, CA.