If I recall correctly that is caused by a weak strike or a planchet that was hardened for too long which stopped the planchet from fully going into the recesses on the Die. But this is just my two cents if that matters
Mr. DHalladay you are the winner with the closest answer. Here is your now it is your turn.
the full price I paid for the coin was the roughly $115.16 it was not my proudest moment. I bought it when I was first getting into Morgan dollars.