Some 1999 Georgia quarters that were mistakenly struck on experimental planchets have sold for extremely high prices, reaching up to $10,000 in some cases.

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Peter Gudella via Shutterstock Minting coins isn't exactly an exact science. Even though most ...