I have a new in box slider window with screen that I had Penninsula Glass make for my 4101. I never used it. Excellent factory condition with rubber seal and outer aluminum trim piece.
I sold my former Union Pacific PDA 4101 awhile back but have some smaller parts for sale plus a maintenance manual that was copied from an original. Not exactly a great collectors item but if you have ...
I owned one of the UP Railroad 4101's that they used to take passengers from the depots to surrounding areas. I sold it some time ago but have a few smaller parts for sale and a copy of a GM PDA-4101 ...