This "resale value" thing really gets out of hand. And you have a RK sub-scale loco.
Monetary value? Not much. Value to you? Much, apparently, and that is the only important
part. OK, I'm not an idiot, and I wouldn't put decals on a mint Pre-War 5344 Hudson,
either (I'd sell it and buy 2 new ones with a can motors) - but most of this stuff is
just stuff, and any chance appreciation in "value" will be realized by very few of us,
unless and perhaps you are a Collector and not a Model Railroader - which is a whole
'nuther mental place to be, relative to my own.