I have seen that mark before, and it was usually on woodworking tools that were also marked WORTH. Worth was a house brand of a hardware store whose name escapes me at the moment. I'll try to make the time to check my notes I've accumulated over the years and get back to ya'll with the hardware store name. I have had chisels, braces, try-squares, and brace bits with that mark. They date to pre-WWII, as I recall, and all seem to be good, solid tools. When I say "house brand", think CRAFTSMAN (Sears), Blue Grass (Belknap Hardware), Diamond Edge (Norvell-Shapleigh), Keen Kutter (Simmons Hardware Co.), etc. - tools that were made by a major manufacturer and marked with the store's brand.
Lynn