Wow!!!!!!
What a fabulous old model, quite a find, assume it came to you missing it's end B-trucks? Are there any letters or die marks visible on the inside of the car body casting(s)?
I am aware of a cast bronze EP-4 car body castings made in the late forties for the Parmalee & Sturgis EP-3 chassis, however this is quite different. Yea , verily awesome.