Coins become valuable for several reasons, ranging from their historical value to their metal content. In nearly all cases, ...

The doubled die coin is “a variety created during the die making process,” according to NGC. “As a result, the doubling will appear on every coin struck from that die. If the hub (a steel ...

The numismatic market is proving its strength, with Heritage Auctions surpassing $100 million in sales in just the first ...

Keep in mind that only coins in the best condition will command the highest prices. Double die mistakes occur when the metal on a coin gets struck multiple times by the die or design stamp on ...