I ran across a reference to a really beautiful looking Lionel Macy's uncataloged train set. I think it came with two #607 passenger cars and a #608 observation car. However, I have seen pictures with a #252 engine (sort of a mini "Bipolar" electric loco) and others show it with a #450 engine (a rectangle "brick" of an engine). Is there a "correct" engine for this train set?
Thanks!