Now, I purchased an Intermountain R-40-23 kit, lettered for URTX and numbered 37193. I impulse bought it, assuming that it was correctly lettered; my understanding was that Intermountain only did prototype paint schemes.
Well....I hate to be the first one to tell you this...but...uh...Intermountain is not ruled by prototypically correct paint schemes. In fact, the R-40-23 is a very good model of...well...an R-40-23...which was built for PFE in rather large numbers and is an important car in the PFE fleet. NP had a much smaller number of clones of the R-40-23. Other than that...