Meant to take a digital camera home from work, but forgot.
The variac is a Powerstat model 21.
This link shows the specs. In brief; 0-140V, 5A.
I snagged the attached picture off the web. The one I have looks cleaner than that. I'd say near mint.
Plus mine has the screws for panel mounting the variac, the big 3 inch knob, and the metal plate for indicating the voltage setting. The indicator plate is a little odd because it goes 0-100 with a dot at 85 which indicates 1:1 input to output. It is missing the hardware to hold the indicator plate to the mounting panel, but that's just some sheetmetal screws, or 6-32 nuts and bolts.
I'll try to remember to get pictures tomorrow.
My Heatware