I found this one in rolls last night and I'm not sure what it is or what it is classified as. ( besides junk ).
It looks like it could be a brockage of some kind, but I've never seen one in-hand, only photos. Chris
It's damaged. essentially it's rotting from the inside out , probably after being damaged in another unknown way first. As the exposed zinc corrodes, the upper surface of the coin appears to move one way or the other in relation to the rot. It's a clunker Thanks, Bill
Brockage is when a coin sticks to a die and then the stuck object acts like a die itself. This coin shows no evidence of brockage. Thanks, Bill