Hello,
It's kinda like the old 6" Starret bench vise I found at a garage sale about 9 years ago. I asked the guy about it and he said $5 then said $3 because it was missing the swivel base! I made a base and stand so it was easier to use and move around. The guys at work thought I was nuts for mounting a "bench vise" anywhere other than a "bench"! This vise is one of my crown jewels. Here is a couple of pictures. The base is a car rim filled with concrete. I brace my foot aginst it to get leverage. It makes you think about how to hold something and get the best leverage, which makes you think about some of the ways NOT to hold something that could damage you or the vise.
Edit: Image reduced