That is an unusual look for a Walker! Very nice. I'll grade it 65, mostly because of some pretty good sized hits on the obverse. The luster also appears to be slightly muted due to the toning, which is going to keep it at 65.
Overlooking the appearance at the high points, to which stacking friction can be attributed, I still see wear between the two right-most sets of stripes in Liberty's gown and on the inner feathers of the eagle's left wing. Gorgeous coin nonetheless.