The error coin market has exploded in ways that would make even seasoned collectors' heads spin. What started as casual ...

Discover the complete 1944 penny error list, including rare steel pennies, D/S mint mark varieties, doubled dies, off-center ...

The 2020 America the Beautiful Quarters feature five national park designs representing American Samoa, US Virgin Islands, ...

Coins that have mistakes or unusual features can sometimes turn into highly valuable treasures. Over the years, I’ve come ...

Some of the rarest and most valuable coins in U.S. history owe their worth to minting errors that slipped through unnoticed. Coins like the 1943 Copper Penny, struck in copper instead of wartime steel ...

In The War of the Worlds, Martians attack Earth using mechanized tripods. And, as we all know, tripods have three legs. Hence the whole “tri” part of the word ...

An ordinary-looking £1 coin could be worth £2,500 due to a small mistake. Experts have explained how certain £1 coins may contain a tiny error that makes them ...