Well, my P2K Rock Island GP38-2 (delivered to the RI in 1976) is FINALLY on it's way from Tony's, and I have the Atlas IC boxcar (built 1967) and the two blue RI GP7s (out of the CIP in 1976) on order, so I can even narrow it down equipment-wise to the late 60's - late 70's.
However, I model...