A die-cud is left on a coin when a piece of the die breaks off. Imagine a
Washington quarter if a portion of the die broke and flaked off. There would be a big blob of metal left alongside of his head

Here is an example of a reverse (UNITED) die-cud on a very HTF dime. Please disregard the knife stab marks. This dime was found at an excavation at the Alamo close to where Davy Crockett fell.


I've also received information today which points to it being simply a rim bump as there are no known examples of
Die Cuds in the series and, but another collecter said NGC wouldn't slab a damaged (rim bumped) coin and looking at it closely I don't know...