I was given this rod about 35 years ago, and it's time to solve a mystery and try to figure out what it is. I was told it came from the ex-D&H roundhouse in Binghamton, NY, which had just been demolished. It's about 5' long and pretty heavy. It appears to have been painted black originally. The end with two holes has bushings/bearings, as you can see in the second photo (turned over onto its other side), and the end with a hole and a slot does not. As a kid I always hoped it was from a steam locomotive, but now I have my doubts. Can anybody ID it?