I got a wonderful Morgan 1883P VAM 20 that graded out at AU58.  These are often a mystery to me.  Reviewing the ANA guild for coins and grading, I really don't see any wear spots on this coin.  I thought it should be Ms.  It is certainly cleaner than many MS63s so I was hoping for a grade even higher than that.  But it came back an AU58.  I see no wear on the wing tips of the hair highlights of the portrait, or the breast.  How would you grade this coin?