I'd imagine that pretty well all of us have model railroad "equipment" which, to put it simply, we just don't use. I've got maybe half a dozen or so engines that I can't remember the last time they ever "turned a wheel" on the layout. Not that I don't like them, I just don't use them. So how much sense does it really make to keep them?
This Detroit, Toledo and Ironton GP 38 #204 is one such model. I've had this one for several years. The justification I used for buying it several years ago, was that my JSSX shortline interchanges with the GTW. And of course GTW had acquired the DT&I and it's equipment in the early 1980's, so this engine should fit in quite nicely out on the layout. Right? At least that was my rationalization at the time.