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 ...

That's because rare state quarter errors can give these coins a higher value. Some can be worth thousands, so grab your ...

In the realm of collectible U.S. coins, state quarters that were rolled out beginning in 1999 are a mixed bag. Check Out: ...

Each state’s quarter featured an image representing ... While perfect quarters can fetch a tidy sum at auction, coins with errors can also be valuable because few usually exist.