The 1975 penny error list includes some remarkable mint mistakes that can transform an ordinary cent into a valuable treasure ...

As with just about any asset, a coin’s value is determined by its market demand. This means that coins in short supply often see higher demand — and higher values. With coins, supplies are limited ...

Some of the rarest and most valuable coins in U.S. history owe their worth to minting errors that slipped through unnoticed. Coins like the 1943 Copper Penny, struck in copper instead of wartime steel ...

Old pennies that have been stamped twice during the minting process and have been circulated throughout the United States by accident have long been selling for thousands of dollars. In January 2023, ...