well there is the "crack" to the left of the bust then starting from between the T and Y in liberty and all the way down is the same sort of line in an almost parallel fashion. In hand it doesnt seem to be a crack. Sorry about the reverse it is quite gross, but as far as i can tell shows no irregularity.
Sure that is grease? Almost looks like it has been burned. The reason I ask is there appears to be pitting. Perhaps this was in a fire and someone already tried to clean it.