An interesting find!
This car looks very much like a modified Abarth 210A, with body designed/built by Boano in 1955. The only differences I see on this car are no chrome bumpers, a slightly different engine lid & tail design (with different taillights), and the front nose cone has been chopped off & an Abarth 750 "grille" installed.
The front half of the car, the windshield & the interior look nearly identical to the 210A. Photos of the 210A that can be used for comparison can be found in the recent book "Abarth - the man, the machines" by Luciano Greggio (Giorgio NADA Editore), on pages 105 & 120.
Did you get any photos of the engine of this car?
-JS.