Good morning all, I am new to this forum and am really excited to get going on here. Seems to be a wealth of knowledge on this forum. I have done some searching by reading through quite a few pages of posts and can’t quite to seem to find an answer. I read another post where someone has a similar one to mine but seems to be a generic vise and another post where a gentleman has one exactly like mine but he does not know the maker either, so this may be a lost cause but figured I would try anyways. Yesterday I bought two vises from an estate sale outside of the Atlanta GA area, one is marked(Iron City) the other is not. Was wondering if anyone had any insight as to who the maker is. It weighs 68lbs, the jaws are 5 1/4” wide. The only marks seem to be 4 little divots on the mounting plate body under the screw box. 

That looks like a brute.  I'm new to this  and if mine didn't say Columbian on it, I'd not know what it was.  Looks like a great score.  good luck.  

Forgot the photo of the little 4” Iron City.