Zug wins the prize! That IS the engine. [Y]
I must have earlier or later been on some page that also mentioned an SD, and I conflated two engines. I know for sure at some point recently I was indeed on the TVRM’s website.
That 5000 is a beautiful engine! Thanks, zug.
The TVRM also has the 3170, a former Southern SD40 that Norfolk Southern restored back in 2015. It was the class unit for Southern’s SD40 fleet. It was used in regular service and on passenger specials before NS donated it to the TVRM in 2016. I have seen many photos of both the 5000 and the 3170 spotted together. Head on, both units look very similar: https://www.flickr.com/photos/135904349@N02/34724266146
The TVRM also has GP30 2594, but it would be very hard to confuse it with an SD or another GP unit. Here’s a link with more info on the TVRM’s collection: https://www.tvrail.com/equipment/
The picture of CB&Q 440 is aSD9s whitch is single control i belive and has a small fuel tank so was of lighter weight that has been discussed.
Carl.
CB&Q had a sizable fleet of lightweight SD7/SD9’s to service the branches.