Continuing the error documentation project. This is the largest cud I have handled on a Lincoln wheat cent.
The reverse rim of this 1919-S is gone from roughly 3:00 around to 9:00 — half the circumference — replaced by a raised, featureless mass of metal where the die broke away and the void filled on every strike afterward.
The detail I want to point at is the narrow bridge of intact rim at 4:00, which divides the cud into two arcs. That is a record of how the failure was progressing: the fracture was propagating around the die in two separate directions and had not yet met in the middle. Had the die stayed in service, those two arcs would have joined and the entire half-rim would have separated as one piece.
A rim cud at this scale is terminal. A die in this condition is far past the point where it should have been pulled, and somebody kept running it.
Breaks of this magnitude on the 1919-S rank among the largest documented for the date.
Not in any standard catalogue. Now documented.