Doesn't look like it. That line in the middle is probably just an artifact of the light and magnification, but I'm not an expert.
I would say it took a hit. Here is a link to the 1986P doubled die on Coppercoins.com : http://coppercoins.com/lincoln/diestate.php?date=1986&die_id=1986p1do002&die_state=lds If it were a doubled die chances are it would affect more than one digit. Notice on on the link I sent you. There is a separation line on the tail of the 9, a bulge on the 8, and on the 6. That is not to say there are no doubled die's affecting one letter, but most of the time more than one digit is doubled.
Looks like a die crack to me right along the 6 making it look like a double 6. @THE BIGDOG In regards to post #4 please speak for your self ... as to your reply to post #3. As" I" don't wish to be any part of your post of "we." I'm quite sure other members here also would rather speak for themselves .
Seriously now I think Paddy may be right on the die crack. I blew & cleaned up the pic a little bit. May be on to something there, maybe.
He's just a troll - wants one of us to say the wrong thing to get booted by the mods - WELL - WHY don't the mods boot him??????????? I just sneeze wrong with a word and I'm gone for 2 weeks!! BS!!!