It's no surprise that proof set values are linked to the metal of the coins, but this super-valuable gold proof set is...well ...

a 1920 Indian Head Gold Coin in circulated condition is worth between $20,000 and $75,000. But that value rises to as much as $2 million for specimens in pristine, uncirculated condition.

A new measure has been brought forth to suggest commemorative coins for the 25th anniversary of the Sept. 11 terror attacks with the coins being issued in 2027.

The Mint also produces numismatic products, including proof, uncirculated, and commemorative coins; Congressional Gold Medals; silver and bronze medals; and silver and gold bullion coins. Its ...

The Mint also produces numismatic products, including proof, uncirculated, and commemorative coins; Congressional Gold Medals; silver and bronze medals; and silver and gold bullion coins.