Sometimes planchets for one coin denomination are fed into a coin-stamping press equipped with dies of another denomination. This results in a coin that has been stamped with a design intended for a ...

The 1990 penny error coins represent some of the most exciting finds for modern coin collectors. This year marked a significant transition in U.S. Mint production ...

That scarcity at the top end shows up in auction records and price guides. A detailed collector’s guide to the 1983‑P Washington quarter notes specific certified examples, such as NGC MS67 ...

The “Faceless Bat” error represents the most famous mistake on 2020 American Samoa quarters, where debris or grease between the die and planchet obscured the ...

An expert has urged Brits to look out for a valuable 50p coin that could sell for around £50. This piece features a rare error making it worth around “100 times ...