Just to show there is a prototype for the 'unnumbered' HO scale models out there, here is CR SD60I 5594 at JLS in Altoona, PA on March 13th, 1995. (I know the HO scale model doesn't have number boards though!).
Photographer
Photo Date
Conrail Road Number
5594
Builder
EMD
Submitted by CRHS Admin on Sat, 09/26/2020 - 23:20