I just opened this set in order to grade the individual coins. There are no bag marks, nicks, scratches, hairlines, scuffs or other marks of any kind on any of the coins. However, there are scattered specks, they look like dust or something (never opened before. I would grade these coins as PF65 or above except I don't know how these tiny specks would affect the grade. Could it be natural deterioration of the metal? Comments please. Thanks