I photographed CR C-424 2485 outside the Hornell shops in 1982. It looks like it was one of a few parts units that were left behind after GE finished with all the Alco rebuild programs. Not sure if it was still there when MK took over. I don't have any notes as to what the ex-RDG unit's number is, and the frame that looks like its reddish primer puzzles me. I tried matching up the black paint patch on the ex-RDG to try to identify it, but the quantity of RDG-patched C-424 photos is a bit slim on the internet
I shot the 2485 on a trip to look over the trackwork to put the Southern Tier mainline back in shape after NYSDOT won their lawsuit regarding the pitiful "Mickey Mouse trains" (cab hops, trains of empty cars running back and forth) that Conrail had been running in violation of the NYSDOT's Southern Tier Line financial investment agreement. During the recession, traffic had been confined to track 1 west of Hornell, and track 2 had been left to rust (with the River Line switch still intact, even though the River Line was abandoned west of the signal). After Conrail lost the lawsuit, they did some work to put track 2 back in service. Ballast has been dropped, the River Line switch frog pulled and replaced with a piece of stick rail from the River Line (no traffic has been over it), and regular tie plates have been dropped in preparation of replacing the switch ties with normal ties.