Hello Bigdenn
While I'm certainly not the pro you're waiting for, I have to agree with John1. It looks like the raised portion of the die that punches the center of the zero chipped off.
As for value, I'd guess it added a couple of bucks. You can look up similar sold items on ebay to get a sense of pricing.
But, the great thing about this site is that the pros will comment! They'll help you with the value.




















