Thanks so much for the Registry work, sorry I will leave your above question for the more qualified. The following is the letter I received from the Archivio:

Dear Mister Kearns,

With reference to your request we are informing you as follows:
According to our documentation files, the chassis number AR 1495.05883 and the engine number AR 1315.32128 originally corresponds to an Alfa Romeo Giulietta Spider Veloce, manufactured on the 2nd February 1959 and sold on the 3rd March 1959 to Hoffman Motor Car Co., New York, U.S.A.

The body colour is red.

Yours, Sincerely,

Marco Fazio
Automobilismo Storico Alfa Romeo 
Archivio Storico

Level of originality: I purchased the car in an unmolested condition with the exception of one prior exterior repaint and is now currently under restoration. Included with the car came pages and pages of hand written documentation dating back to the late 60's.