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HankronJust remember that the proofs and other oddities were invented long before the current grading system. When the vogue grading system doesn't work for a type of card, it's the grading system's fault not the card's.
The PSA & SGC type of grading standards were honed for a specific type of product with particular qualities, and shouldn't be applied in a religous manner to other products.
To me at least, owning an unaltered card that the popular grading system 'can't compute' is something to be proud of.