Bachmann Doodlebug. Purchased off eBay as new. I bought a set of gears from JamesTrainParts.com and they’ll be installed when I add a decoder. The one photo shows the gears on the roof.
I recently found this Stewart Hobbies Rock Island F3A. Not my road, but I fell for the livery. The Kato drive appears new or slightly used.
My latest purchase was this Walthers SD50. It will need some tweaks to get it to more closely represent a Grande SD50....