Athol/Starrett
2nd'd. The swivel lock lever is the give away. No one else used that style.
Greyson
That, and the YUGE jaw support
Good luck grabbing it Ken, I think Starrett/Athol are one of the best there are. I got a cute little Starrett 3" fixed base no 923 at a flea market for $10, and it is a serious little vise! I also have a Reed no. 23-1/2 utility vise similar in size, but swivel base...the Starrett weighs 1.5 times as much as the Reed. Starrett opens about 3.75" as it can hold 2x4 laid flat, it's a decent substitute for a c-clamp tbh, lol.