Its called a "cud", part of the die had broken away.This is a pretty large one. I have no idea of value though.
That's an awesome cud. Most cuds are valued between $5 and $10, but that's a particularly large one so I'll wait for an expert to chip in a value.
Whoa....... not the mother lode I've been looking for (Ha Ha) but certainly interesting. I think my dad may be rolling over in his grave right now (and I thought his "unique/defects" baggie was a waste of time). THANKS for the info.