This is a Keith Richards ring that was sold as official merchandise during the Rolling Stones' mid-90s tour. I had some documentation, but unfortunately, I've lost it and can't include it here. I apologize, but if you're interested, please check online or on overseas sites. Sorry. Japanese outlaw actor Yoshiyuki Daichi also wore this ring. There are minor scratches from use, but it's in relatively good condition. It's a size 20. The shape of the back is unique, so while it might stretch, it's best to wear it as is, on the finger it fits "just" right. Yoshiyuki Daichi is currently in prison, claiming innocence in a case that is believed by some to be a wrongful conviction. If you're interested, please search on YouTube or other platforms.