Definition: Wavy Steps is an affect seen on the reverse die of the  Lincoln Memorial cent (under columns 4, 5, 6, 7, 8 and 9) and the Monticello building on the Jefferson nickel.  This is caused by a trail line passing through the stairs and bending them in the direction that this line has taken (in degrees from 150º to 210º). While this anomaly has been known since 1995, the term wavy steps only came into being in the year 2001. The example in the left image has a direction of 180º, while the wavy steps in the right image has a direction of 190°.

For a more detailed description of this anomaly type click HERE

    1993D-1DER-007WS

2013P-5DER-002WST