Thank you very much for the help, everyone. SS Save i cannot find any other markings, I’ll clean them lightly and see what’s hiding under the grunge.
As for the Plomb tools I gave the majority to a friend to keep with his 1944 Willys MB. He loves the period correct stuff, a good amount of it was WF stuff. I kept two ratchets, a 5449 1/2” and 5649 3/4”. I did get a set of Lectrolite Tru-Fit offset wrenches that I’ll keep. The Proto and SK stuff was mostly 60’s. The estate was primarily machine tools and accessories, I scored a bunch of great measuring equipment, clamps, indexing head, dividing head, tool post grinder, chucks, cutting tools, books etc.
My equipment is mostly of similar vintage, a 1971 BP variable speed, 1956 SB 10K benchtop, mid 50’s Craftsman 150 drill press and block grinder.
Some examples-