[TanksAndSpartans]

Anyone have any idea why the grading companies don't grade these? I only noticed them because for my main and pretty broad area of interest (pre Super Bowl), a lot of players don't have cards, but they have these. And I'm not one to get excited about oddball collectables, but these actually have really nice "football card style" write ups/bios, so despite not being "cards", they are basically the type of collectable I like. Thanks for any info.