It's a 1999 Lincoln Cent, close AM with Mechanical Doubling. According to the Red Book, close AM and wide AM are considered varieties so in that sense you have the close AM variety. No added value. The 1999 wide AM is the valuable one.
what is machine doubling? still very new at this guys. and yes i could google. but what fun is that? conversation is where its at.
If it's flat and shelf like, it's MD. It's one of the forms of worthless doubling, NAV that occur on coins, especially Cents. It's common and normal.
You don't need to Google it. Read the definition on this site: http://doubleddie.com/144822.html It's too long to explain in a conversation via email. A simple explanation is that the doubling is flat and shelf like, no split serifs, doubling is not on the die.
Conversation IS where it is at! I received this link from someone and it turned out to be very helpful. I think being able to tell the difference between the two will come easily or be difficult. Either way, check this out.....http://www.errorvariety.com/OFD/MD.html
