A List Of More Than 100 U.S. Error Coins By Denomination - see all of the pennies, nickels, dimes, quarters, half dollars, and dollar coins with errors you should be looking for!

How to tell if you have a rare Buffalo nickel with an error or variety! A list of the most valuable Buffalo nickel errors - including the rare 1936 and 1937 3 legged buffalo nickels. See the current...

Found a coin with an odd marking on it? It might be a counterstamp! This article will tell you what counterstamped coins are, why they exist, and how much they're worth.

Find a coin with a straight edge or a crescent-shaped edge? It may be a clipped planchet error coin that was mis-cut at the Mint! See the 4 types of clipped planchet error coins, how they're made,...

Find coins with bubbles in them? Want to know if they're just damaged or real error coins worth a lot of money? Here's how to tell & how much they're worth.

Find out here if your quarter without ridges is a valuable quarter error or not. Plus, smooth edge quarter values for all broadstrike error quarters dated 1964 and newer.