Those 4500's were 1942 "war babies" and Clark Hungerford came on the scene about 1947, Frisco steam was done ca. 1952, so they would have had (about) half their working life in each scheme. If I were modeling HO (And had, of course the cash), I would have got every version of the Glacier Park 45's! Tom
Darn, I just read your note and the loco appears no where in site. I guess it sold. Thanks for the post though. ~mike