Let me know what you think of this one ! The MM appears to be offset doubled and couldn't find anything on this!
@Newbie69 Read the first part of this website I want to share with you - http://www.error-ref.com/?s=Zinc rot This is the issue with yours if it continues. Common on Copper Plated Cents!
Not sure if my pics show what I'm looking at on your end but I'm not looking at the blue part of my pic. There is a D farther SE of that in my pics!
Just not convinced you are seeing what I'm looking at because none of the links show what I see in my pics! Sorry Paddyman98!
Yes, there is "something" to the SE (you were correct to begin with) of the mintmark and this is in addition to the split plating. However, and even though the shape indeed mimics that of the mintmark (although not exactly), I've a very hard time believing this anything more than a well-placed post mint artifact of some sort. There's just so many things that can happen to a coin, particularly a Zincoln, the odds greatly favor it being nothing. Can you produce an overlay?