Hello Jen
See if it has a pump. Check for a handle on the right side of the machine, and a hooked drain hose.
It has the very popular 3 vane straight agitator.
If it is truly working, and the body is in good shape, you could offer it for sale here. Though many prefer the Visimatic version of this machine, your standard model is nothing to sneeze at.
Thinking 50-75 is a fair range, depending on pump, body, working wringer, etc. If it is a "mint condition" machine, 100 would be the upper limit.
Close-up pix would be helpful: the controls, the tub, the wringer, the hose.
Thanks for thinking of us.