Do you know when it was made? I'd imagine that old stone things are pretty solid and you can get it going again.
Discussion
I think early-mid 70s, but the serial number plate is missing. The lid hinge needs to be replaced, and the dial is seized. Other than that it seems to be okay. It reached 730°. I figure thats not too bad for having a seized thermostat.
I found the manual & wiring diagrams online (or at least I think I did). The manufacturer still sells parts. It shouldn't be too hard to get it usable. I'm so excited. I'm gonna make all sorts of silly shit. 😅