Dear Paul Jaray,
thank you for your benvenuto, and grazie to you all at AutoPuzzles.
I've been following AutoPuzzles since several weeks and I must congratulate you and the other Forumers, especially the more experts, for finding (and then finding the name/date of) cars that are very often extravagant, real gems of automotive history and knowledge. I can barely manage to solve one half of the puzzles recurring to some dozens of books in my library, which is not a good result for an old-time enthusiast like myself.
I'm sincerely puzzled by this Aprilia. This grille is so characteristic of Littorio-era Italian sports cars that it might be a little misleading, having been used in more or less the same shape by Fiat Carrozzerie Speciali or Pininfarina or Aprile (Corrado LoPresto's Aprilia....) without being a real trade mark. I wait with bated breath for the solution that will obviously force me to slap myself on my forehead thinking "Here! It was simple!"
All the best from Italy,
Stefano