Cool work of 'art' and time, Rich. From time to time many collectors have tried to pick 'perfect' letters or numbers where you don't have to look through other markings on the marbles but your idea is a good one. I think I have a 3 somewhere but I'll have to look for it. Of course, if I turn the 3 upside down, I'd have an E. Here's a pic of one I won't give up - a rare two letter one that Bo gave me a few years ago - OR (for Oregon).