So this 12" could be from the 60s? My floor tom is definitely 60s and has clear interior
No, I wasn't saying that. I was merely saying that my statement about serialized badges being put on toms after '62 was incorrect, and that I should have known it was incorrect because I had a 12" Slingerland tom some time back that was stamped JUL 65 that had no badge or vent hole. As has been previously determined by others, I also believe your tom is early 70s.
Sorry for the confusion.
Lynn