Errors increase the value of collectibles because a limited number go into circulation before it is spotted and corrected. This Georgia quarter is a big one.

Quarters have been a part of American coinage since 1796, but while most are worth only 25 cents, some rare issues are worth thousands—or even millions—of dollars. Their value often comes from rarity, ...

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 ...