Hello, I was going through the wrench pile, and found this one. It has a raised S within a circle, Alloy Artifacts says it is a Starrett. Raised on ends 1/2 5/8, I believe these are bolt sizes, as the openings are approximately 7/8 and 1-1/16, respectively. There are raised figures on the other side of the handle, can't make them out. First Starrett wrench I have seen. Regards, Lou