Solved - NEH 2295: Zagato Ferrari 250 GTZ "Prototype" - 1959

[Carnut]

What's this, by whom, from when - for 1 point?:

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[targhediferro]

Ferrari 250 GT Zagato

[Carnut]

Ferrari 250 GT Zagato

Yes. it's a Ferrari 250 GT by Zagato.
But below are the ones most people will think of as the 250 GTZs; so what's a bit different about this one and from when does it date?

[targhediferro]

The grey and blu ones, are from 1957, with the camel roof, the white one is later (I suppose 1959) and has a flat top.
As my name can suggest, I can tell you the original plates of this cars:  grey one, first owner Camillo Luglio, GE.91334,
the blue one, GE.100336 and than MI.312234; I don't know the original plate of the white one, but now it's PD.888888.

[targhediferro]

I want to adda n information;  the white one is called "The Prototype", even if it's the last 250 Zagato  produced, with the chassis number 1367GT, sold to Vladimiro Galluzzi and never driven in competitons.

[Carnut]

Thanks for all the information!
That is indeed what this car is and I'm not sure why they call it the Prototype either (perhaps all one-offs are referred to as prototypes by Zagato!) - unless it was the prototype for the Lamborghini 350 GTZ to which I think it bears some resemblance!: