Fred,
If those were the rings that were on display at the Kettlefoot PSL match, the gentleman who had them was from Harrel's. Lynwood Harrel, who makes the tuners. Right now I cannot remember the young mans name for the life of me. Nice fellow as he was! I just don't remember as well as I once did, for some reason?
If you'll give Lynnwood Harrel a call, Harrel's probably sells them, or Dan Killough will probably know the mans name.