@515, first welcome to CCF. Second, I hope that I'm wrong, but based on this current picture, it looks more to me like someone has taken a sharp edge and made a cut in the surface of this cent, causing some of the metal to pile up on top of the cut.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz