A manufacturing error on the 1999 Georgia state quarter has increased the coin’s value, and some collectors are paying as ...

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 ...

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 ...

The 1943 penny errors represent some of the most fascinating and valuable mistakes in American numismatics. During World War II, the U.S. Mint switched from copper to ...

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 ...

I've spent considerable time testing the best coin identifier apps to find which ones actually deliver on their promises. Many apps claim accuracy but fall short when you need them most. This honest ...