Posted By:
jay woltMike - due to the fact that some can take a back and turn it into a blank back.
I can see the big 3's logic in not grading them.
But in essence my John Morrill Gold Coin is a blank back
albeit it a skinned one. So I would think the big 3 may slab
a genuine T206 as authentic if it has blank back, but just not
give it a grade.