Did you check it for the RDV-006 Reverse ? http://varietyvista.com/01b LC Doubled Dies Vol 2/1988DRDV0061.htm
It is caused by Die Deterioration Doubling. Not an RPM. Note how the doubling appears to "flow" towards the rim. That is die deterioration, which is common on mintmarks on Lincoln cents during this time period.
It's Plating Split Doubling . http://www.lincolncentforum.com/plating-split-doubling-split-line-doubling/