I don't have anything that old, but seeing your topic and the "cool" icon I immediately thought of this...I acquired some used drum heads years ago, and among them were a 20" plastic and 22" calfskin that were both hand-painted with the logo you see below (picture is the calf head). Probably from the early 1960's period. It appears to be tempera paint, and if I read my "pictographs" correctly I think it stands for "Joe Cool" but I can't be certain.Jeff
Are you sure these heads didn't come from this "Joe Cool?" Look at how the glasses match!