I got mine almost a year ago (used of course) with a workbench and small toastmaster bench grinder for $20. I gave the bench grinder to my father-in-law and still have the workbench and grinder. It's a cool hobby vise, and I think it's a little newer than yours going by the label compared to your embossed one. I was thinking about securing it to another table I have, but it looks like it belongs on the bench.
I'm not a fan of the exposed lead screw since I do alot of welding/torch cutting/grinding when needing a vise, but it's really easy to break down if I had to.