Very nice research Stud! Very interesting history to a very interesting ring. An SD man no less, you would not have wanted to be on this guys bad side! As for the COA, the price is a bit ridiculous if you ask me, I am confident enough in my abilities to tell an authentic ring to be comfortable making a purchase of a TK ring without spending lots of money for someone else to tell me what I already know, and I highly recommend everyone does their own research so that they can save their $350 on COAs. Shoutouts once again to Antonio who wrote an amazing book about the subject!