So I was taking apart my old knuckle seals on the G503, and was surprised to find a paper gasket (ok that I did expect to find, but definitely not the markings on it) with some old markings. Because of the way it was cut to fit the seal, I can't read the full name of the company that made it. I think it is probably from the 1940s, but wondered if the partial manufacturer name rang a bell? Never saw a marking on these before.
Thanks for any ideas what the manufacturer's name might be!