Yet another request for Wilton vise Identification; 645? What's with the square screw collar?

[joed1964]

Hi all. Apologies if this has been asked and answered, but I can't seem to find this exact vise anywhere. It looks like a 645, but the dynamic jaw has no part # that I can see, and it has what I assume is a square screw collar (see photos). I can't seem to find a date on it, and all the old catalogs show a 645 without the removable screw collar. Any ideas of specific model/year/worth? Any help appreciated.

Joe

 

[1982fxr]

I've had a few with that collar. No clue on age.

I had an old 8 inch version one that I've never seen another of. Wish I still had pics.

 

[paulsomlo]

Its worth is in its ability to hold things.

 

[RustyRelicRevival]

Machanics tradesman vise. Probably $60 to someone. Not that desirable to collectors. Run it!