The only time I have found coins with a different ring to them, was around the 2006 era. They turned out to have a split in the side of them and could be pried apart with force. Found quite a few of them at that time, but haven't seen any since.
Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited. Contact Us | Advertise Here | Privacy Policy / Terms of Use