A short time ago I bought an 1861 3 cent silver piece from a friend that has a rotated reverse of 180 degrees otherwise known as medallic alignment. It was a raw coin and I sent it off to NGC for grading and attribution of the error. The coin is a solid AU coin showing virtually no wear and to my surprise NGC slabbed it an XF-45. I showed the coin to my coin club president who had worked as a professional grader and he said it should have been labeled an AU-50.
I sent in a beautiful 1851 and it came back as Surfaces Tooled. I took it to three separate dealers including the one I bought it from and no one could identify the tooling. I left it in that obnoxious slab because it is protected and I am keeping the beautiful coin for me. Don't let the "grade" bother you too much if you are planning on keeping it.
For buyers, another tale of buy the coin and not the slab!