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 ...

If you come across a forgotten jar of change while cleaning the house, take a close look as you wrap the coins or before you ...

This doubled die nickel is unique. According to PCGS, doubling is when there is a mistake during the minting process. For example, the date might be doubled on the coin. There is a difference ...

Mint errors, such as off-center strikes or double dies, can significantly increase a coin's worth because of their rarity and unique value as a collectible. This first-year issue is highly sought ...

A rare "double eagle" coin was recently sold at an auction in California for over $1 million. Enthusiastic coin collectors eagerly vied for the rare $20 "double eagle" gold coin during the auction ...