CoinCollector2000, you agree that this just looks like something hit it with Fuzzy317? I see where the mint-mark and 6 are in-line with each other and the D definitely took a hit, but the base of the 6 doesn't even appear to be part of the same stamp or die. There is a distinct separation of halves on the 6 and an overlap and miss-meet of the two halves where they meet. It looks to me like the bottom of an 8 and the top of a 6. (and that is just flat making something up to explain the look).
As far as wear, the rim and shirt are untouched!
Thanks for the input,
Robert