I have apparently a Nelco N-250-B-4, and I'm trying to figure out when it was made. It is very old, and very sturdy, and as far as I know, has stood the test of time. My mom picked it up at a yard sale, and I just looked it up online. The model I said it is is the one that matched the picture to my machine the best. It is a hand-me-down, and as I said, is very old... I wonder what sorts of things it can punch through.
I get the impression that maintenance is important, but I don't think this machine has ever been maintained in its lifetime... Hehe.