To me, this is one of the hardest coins to grade. I got this coin, raw, from a vendor at a coin show. I thought it was a gem MS type I Buffalo with a terrific strike. It has huge luster and it was picked it up for about 70 dollars. We probably got ripped of as usual. I got it and sent it off to ANACS and now it has come back graded as an MS64. In the hand I didn't see and problems with the coin, but upon photography it, they become apparent. The feathers are weaker than I thought and the top of the buffalo head is soft as well. It has a soft eye. But another thing that showed up to me only after it was graded and photographed is that this is the first coin I ever owned with a rotation error, in this case it is about 10 degrees! ANACS didn't notate it.