I am gonna go out on a limb here. That luster is amazing. I think that they net graded the coin to a 64, and called the marks on the chin and field below bag marks. I have a hard time calling this coin any better than 62.
62, this date comes nice. It might just be the light catching the obverse scratch, but it looks to me like something the coin should be downgraded for...good choice for a gtg.
I thought about 62. It has 63 details, but a couple of really big marks. Obverse—cheek, reverse, above eagle. That is why I went 61.