Just thought this might be of interest to Kennedy variely collectors. This one was just listed a couple days ago.http://www.errorvariety.com/Lathe-lines/9050CLL001.html
When I was actively searching the $500 boxes of Kennedy's, I saw hundreds of these and they are not uncommon. The dies were not fully polished before they were put into service. Chris
You sure you're not looking at coins with lines caused by a roll crimper? Those are, obviously, very common.