
The area below column 11 passing through the stylobate appears to be raised and is most likely a die crack or gouge. Under column 12 does appear to be incuse and could or could not be a working hub wavy step. As closelook stated, check under the other columns, for incuse lines.
Normal fluting lines on a wavy step tend to follow the lines on the column.

Working hub fluting on a 2007 cent.
