Error Coins

Discover the fascinating world of mint error coins — some of the most sought-after rarities in numismatics. Our Error Coins section covers double dies, off-center strikes, clipped planchets, broadstrikes, die caps, and other production mistakes that make certain coins extraordinarily valuable. Learn how to identify error coins by type, understand what drives their premium over face value, and find out which errors consistently command the highest prices at auction. Explore famous errors like the 1955 Doubled Die Lincoln Cent, the 2004 Wisconsin Extra Leaf quarter, and modern mint mistakes still being discovered in circulation today. Whether you’re a seasoned error coin hunter or just learning to spot mistakes with a loupe, find expert guidance on collecting, grading, and valuing these one-of-a-kind numismatic treasures.