Like John said whenever you see raised parts around a hole it's post mint damage , remember that the final stage in making a coin is the dies stamping it . Thus Flattening it and making the metal flow to fill the dies . If the hole was drilled 1st the dies would have forced the raised metal down .
I am learning so much on this forum. I found this wheat cent tonight roll hunting. It's very strange because I have searched tons (not tons, actually) of cent rolls and never found a coin with a hole like this and just this afternoon I was reading a thread about holes in coins!!! Now I know that this is a post mint hole; but, my brain is not satisfied. It wants to understand why the edges of the hole would protrude towards the outside of the coin on both sides. Oh wait, so the drill goes in pushing the edge of the first hole made inward and when the drill gets to the other side it pushes the coin material out. Then what? When the drill is pulled out, it drags the lip of the first hole away from the interior of the coin to the outside? This is the type of thing that can keep me up at night. Think I'll put it on my key ring.
Easy.. When you start the hole you go in just enough to start the initial hole, then you flip it around to continue the hole and eliminate the raised metal.
