Here are the other pictures I posted to Lincolns thread. https://www.cointalk.com/threads/post-your-lincolns.192928/page-270
Good call . I'm in the three camp too . http://varietyvista.com/01b LC Doubled Dies Vol 2/1972PDDO003.htm
NOT machine doubling. It is a genuine doubled die. In addition to Ricks sourced link check www.doubleddie.com.
All these 72 DDOs are popping up this last week. Just my luck...I got stuck with 4 boxes of shiny2018Ps.