I'm looking for info on this old gang mold. Yes, I understand that the stampings could have been added at any time during this molds lifetime, but I promised the owner I would find out all I could about it. Have you ever seen anything like it? Can you make something of the markings? Know a better source of info I could tap? I failed to get a diameter of the negatives, but they seem to range from .36-ish to .72-ish. There is no makers mark. Thanks!