Die wear shouldn't play into the grade at all. But, it certainly plays into value as one of the less tangible attributes (like toning). I went with MS64*. Light wear on Libertys cheek and very minor bag marks above the eagle keep it just shy of 65 to me. Beautiful coin!
I really like that fireball peripheral toning. It is an attractive coin! I also would call it undergraded. Looks 64 to me.