Wavy steps and trails
Minting error on US coins / From Wikipedia, the free encyclopedia
The wavy step or trails error is a die error that is found on some United States minted coins beginning in 1986. The anomaly occurs during the die making by the single-squeeze hubbing process.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/78/Mint-made_error_-_1999_Lincoln_cent_depicting_wavy_steps.jpg/320px-Mint-made_error_-_1999_Lincoln_cent_depicting_wavy_steps.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Mint-made_error_-_1994_Lincoln_cent_with_trails_coming_of_E_PLURIBUS_UNUM.jpg/320px-Mint-made_error_-_1994_Lincoln_cent_with_trails_coming_of_E_PLURIBUS_UNUM.jpg)