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Message:: [QUOTE="Tom Maringer, post: 2268619, member: 7033"][ATTACH=full]451607[/ATTACH]Here's a pic of some of my customs that were batch processed on fresh coins right off the press. This is a selection of the more intense colors out of a total batch of 160. You can see that there are quite a few random variations. I was able to identify the conditions responsible for the more startling color pattern as compared to the more plain bluish single color (lower right). This is the Eddard Stark silver pfennig (1 dwt .999 fine silver) from the A Game of Thrones series. Some are rather startling and others quite plain. I do not do this on "real" coins. I only posted to let people know that rainbow toning is not so hard to do. I daresay that with about ten grand in dedicated lab equipment and reagents, it would literally be possible to emulate any conceivable toning pattern. So while it's interesting, I don't believe that toning should command premium prices beyond the few dollars it would take to purposefully create. If I can do it, others can too. I have not shared my recipe... but with a few experiments anybody could figure it out.[/QUOTE]