Belated NYINC report -- only possible due to friends on this forum!
Considering I wasn't even there and I'm on my limited budget mode (hello new car). BUT, there were of course things of interest, not only as expected in an auction, but on the bourse. I really only had my eye on one thing, something I 'shouldn't' buy as it was a dupe, but for a good reason. Being January there were loads of auctions about and I had my eye on some goodies and the budget was fairly well spoken for...until I got blown out on things I thought I had a shot at.
So, I went for this one. The high grade coins in every sale/auction archive I'd looked at showed what appeared to be a die flaw/chip on every coin. There's an old post on Cointalk that alluded to 'most but not all' of the coins having this mark and speculated it's actually a mark created during to production process whereby the coins were being hit by other coins as they were ejected. I've never heard of a consistent mark like that, and until the Stack's auction I'd never seen a picture of a coin without it. Lo and behold, two examples up for auction, an NGC 64, and the PCGS 66+ that I was successful in obtaining.
Here are two versions of coin won, one with more diffuse light:
It's a nice example that is for sure! Someone has dipped out the very commonly seen round tab toning, but it's still visible. Here is a side by side of the coin next to a very similarly graded one, no tab toning and a bit more natural, but you can see the die chip or ejection mark or whatever you want to call it. But that mark at the arrow tip is on every other one of these I've seen until the Stack's auction.