Sorry the pictures suck. Going have find something else other than my phone to take them with. Anyways top of the coin appears We Trust is stamped on part of edge or over crack? Don't think it's coin roll damage looks like are on top of the rim line to me.
That is a form of die deterioration. design devouring die wear. This is common on copper plated zLincolns. http://www.error-ref.com/?s=Design+devouring+die+wear
