My first thought was corrosion and staining from a rubber band. The last images make me think, I don't have a clue.
As requested... i forgot i bought a $10 scope @ wally world! I will be attending the annual chillicothe show sunday,whilst there I will show this to my buddy Eric... who is an ex-grader @ Anacs and he also specializes in error coins... So hopefully he can tell me what kind of an error Ive got here.. I will relay the info!