It's something added to the surfaces from the environment the coin has experienced. You'll likely never know exactly what, unless you have access to sophisticated chemical analysis equipment.
Whatever it is IMO detracts from the coins appearance. Go spend it.
Quote: It's something added to the surfaces from the environment the coin has experienced. You'll likely never know exactly what, unless you have access to sophisticated chemical analysis equipment.
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