Well' I'll tell you:
It was an american car not from the big-3 and not even one of the "major independants" (Studebaker-Packard-Graham).
But with a V8 engine there were really too much! In the other hand, before 1942 there was a list of moreless 380 cars and then you said that it was available in a closed or an open body and that it was a well-known one, that narrowed down my list to 4\5 cars, such as the Marmon or the Cunningham, but only the Cord is well known for one (or 2...) model in particular.That's it!