After stating it is an 005 and seeing that it is on a 1989 Lincoln, I have been doing a little research to prove myself wrong.
From what I can understand, about 10 years or so ago it was thought that this was a variety (005 on 1989 cent) and it may have even been on Variety Vista. After much discussion, Dr. James Wiles, a Coneca attributor claimed that this was caused by die abrasion that caused the 006 to look like an 005 and it is no longer listed.. If you were to send it in for attribution, it will just come back as being caused by die abrasion.
I picked this info up from reading bits and pieces of other discussions about this so it is not something new but has been hashed about for quit a while.
Hoping that someone else can add something to this posting as I had never heard of this before and am interested in what other members take on this is..