How to Clean Coins. Over the years coins can accumulate dirt, germs, and other gunk, which removes the natural lustre from the coin and makes it visually unappealing. Because of this, you may want to clean your coins to try to restore.
Among his many innovations, Tipu introduced new coin denominations and new coin types, including this handsome copper double paisa weighing over 23 gm. The coin on the left also contains the emblem of the Sultanate of Mysore.