A cud is the result of a broken die. When part of the die breaks off the metal flows into the void when the coin is struck. This leaves what is on the bottom of the reverse of this coin.
Too bad it didn't just keep the "five" Then it could be used like a NO CENTS V NICKEL.. AS a $5 piece... LOL LARGE AMOUNT OF CUD INDEED! NICE FIND THAT IS FOR SURE
Wow! I've never seen a cud that big! These were tooled quite a bit (Hobo nickels), are you sure it isn't one of those?