Many types of mint errors are missed by inspectors and are inadvertently released into circulation. Clipped Planchets, Off-Center Strikes, and Wrong Planchets are just a few examples of the many types of error coins that slip out of the mint occasionally. Some errors are fairly common, but many are extremely rare.
Indian Head Cent.
Indian Head Cent struck 15% off-center.
Indian Head Cent struck 10% off-center.
Struck 5% off-center.
Indian Head Cent struck 35% off-center.
1968-S Lincoln Cent struck on a dime planchet.
1970-D Jefferson Nickel struck on a cent planchet.
Ike Dollar struck 10% off-center.
SBA Dollar broadstruck on a blank. UNC Details - Obverse Wheel Mark.
SBA Dollar broadstruck on a blank.
Sacagawea Dollar with Double Curved Clips.
2002 Tennessee Quarter struck on a nickel planchet.
2002 Tennessee Quarter struck on a nickel planchet.