Man, that thing may be older than my westinghouse, lol. Those old machines like that are almost indestructible. Most likely the only moving parts are the screw that raises and lowers the coil, the pointer and the fan. The fan can be replaced.

The second time I toasted the 400 amp miller my boss assigned me a machine that I and I alone could use. It was the biggest lincoln shop machine I have ever seen, was so old all of the lettering was gone, he said it was built in the early thirties, he started the company with it, and he wanted to see me try and burn it up. They still use that machine daily.

I'm not working on a museum, but I am getting a pretty fair collection of old cutting equipment, and have an old 400 amp ac westinghouse. Aw heck, I might do the museum thing myself.