My first thought is that the markings on the back (non-emblem) side look Russian. I don't think it says 4UP, but rather those are three Russian letters. Google Russian alphabet and you will see there are three characters that match. Also, in the Russian (Cyrillic) alphabet there are characters that are the same as T and M. No character that looks like I, but from your picture, what's between the T and M may not be a letter, but part of the rest of the logo. Do you know anything about who had it before you got it? It certainly looks old and may have come over from the old country in someone's steamer trunk. Or not, Russia continued to use old technology and processes long after the rest of the world moved on, and the gear/toothed wheel logo has a kind of post-revolution industrial look to it. Just my thoughts, and I could be way off base here.
