Manufacturing errors might be annoying when it comes to most products, but they can be a massive moneymaker when it comes to collectible money. Errors increase the value of collectibles because a ...

There are a significant number of rare coins, with some printing deficiencies or that are part of specific mintings that make ...

The value of a 1999 Georgia State Quarter has been estimated at up to $10,000 due to errors made while the coin was being minted. This quarter is the fourth coin in the 50 State Quarters Program.