I'm only guessing, But...I would think that coin was old, and in a very bad environment, ( too hot or too cold ) and the Obverse said to the Reverse, " I don't know about you, but I can't take this Crap any more, so I AM LEAVING!, " And again guessing, the Reverse immediately told the Obverse, " OHH, I HEAR YOU!! COME ON, LET'S GO!!"....And they left that coin....I bet the original owner of that coin was shocked when he saw both sides had left that coin....And had left him too!
And at last, the last one: 1912 P. It has been fun participating in this thread but will likely have no significant pics for quit e some time.