I wonder if Bus has seen anything like that in his auctions. It doesn't look like any Thorsen I have ever seen, so I would be surprised to learn that it is really a Thorsen wrench. I haven't ever seen the "Action" brand mark stylized that way either. I haven't ever seen a stamped Thorsen wrench that I know of. I think you have a genuine oddity there. Very interesting and difficult to research since the terms are so common. I can't wait to find out more about it.