I actually appreciate your reply greatly!! This is exactly the kind of help I need. let me try and answer some of your questions.
1. The size of the rings all are based on the outside diameter of the coins. If anybody was interested in a certain coin I would discuss sizing with them to get it right, I am able to stretch sizes with a little work.
2. I am in the U.S. Sacramento California
3. sorry about the photo I lifted them off my etsy store because i wasn't sure on the rules for linking stores and things.
4. To make things easy for anybody interested if you PM me with interest and size I can tell you what I have available in your size and or possibly make one if I don't have it. I am very flexible and easy to work with, I also recognize that I am new and have no references for your assurance so this is truly a tell me what works for you deal!!
Image as requested:
http://postimg.org/image/w22e2ui2t/