A few days ago I asked for information about the two CD 134 AM Insulators I have. They both have a period that is not listed in the price guide. Here is a close up pic. Notice the period before the C of CO. It is a bit lower on the rim then all the other periods but is visable. I also found another one yesterday, so that makes three. Please email me with your comments, answers or opinions about this embossing. Also, look at the previous pic before emailing. That one is another of this same CD 134 AM Insulator in question. Thank you! Roger