Here is something different. I tried to get a good scan of the reverse on it. The coin seems normal, Other than it has what appears to be the bust of Lincoln on the obv. It is convex which is what is odd. I hope that you can see in the scan what I see sitting here.
To avoid confusion. The Obverse of the coin is normal. The ghost? image on the Rev is sticking up. There is an obvious bump for lack of a better word.