1933 Double Eagle (U.S.) Originally never released for circulation, this $20 gold coin became a legal nightmare when a few specimens emerged in private hands. The U.S. government insists they were stolen, sparking ongoing legal battles and ownership debates.
2008-W American Buffalo Gold Coin (U.S.) A rare error where some coins were struck with the wrong reverse design. Collectors argue over their legitimacy and value, and the U.S. Mint has never fully clarified how the mistake occurred.
1974 Aluminum Penny (U.S.) Created during a copper shortage, this prototype was never meant to leave the Mint. Several escaped, leading to FBI seizures and disputes over whether private citizens can legally own one.
1959-D Wheat Penny (U.S.) This coin features a design (Wheat reverse) supposedly discontinued in 1958. Only one is known to exist, sparking theories of forgery, accidental minting, or insider error—still unresolved.
2007 “Godless” Presidential Dollar (U.S.) Some coins were released without the “In God We Trust” motto. Critics called it an attack on tradition, while collectors viewed it as a valuable error—raising debate over intention and meaning.
Liberty Dollar (Private Mint, U.S.) A private alternative currency backed by precious metals, the Liberty Dollar led to federal raids and criminal convictions. Supporters call it a challenge to inflation; the government calls it counterfeit.