This is an old KTM brass convertable loco. You could make it into a variety of configurations with either 4 drivers or 6. It had a 2 wheel pilot truck and a trailing truck. 2 different stacks and domes. I added the footboards, new headlight,backup light, whistle, bell and generator. I think it will pass for Erie's #2 as shown in the photo with the exception of the tapered water tank.