Uncover the rare 2001-D Lincoln cent mule error coin, a mistake worth over $100,000! Learn what makes it so valuable and how ...

A rare 2001-D Lincoln cent, a \"mule error\" coin with a dime reverse, has fetched over $100,000 at auction. This unique coin ...

D Lincoln penny, mistakenly minted with a Roosevelt dime reverse, has become a highly valuable error coin. Fewer than ten of ...

We are all being encouraged to check our change after a rare 20p coin sold for 390 times its face value this week. The 20p piece is a “mule” coin dating from 2008 and was minted without a date ...