Really tough to tell from the pictures. Fields look great, nice luster. Even with the strike, may get 65.
The details don't look as flat (mushy) in the new photos. Please allow me to submit a new grade of 66. Very nice tatanka nickel.
New photos are much better. TPG's are tough on later Buffalos. I'll guess MS 65. IMO they do give higher grades if the coin is nicely toned.