Posted By:
Richard DwyerI have 8 boxes myself. All of which have full tax stamps. (Tax stamps are on the top or bottom of the box) The only others boxes that would be difficult to authenticate on an opened box would be one that has a tax stamp of 1909-1991 without any overprinting. I've heard that persons have purposely removed the overprinting on certain boxes that had the wrong overprinting to deceive.
Edited to add my boxes are the best ones to have. All the right stuff to prove without a doubt that they had cards in them.