I know that PSA will guarantee their grades as far as, If a card is deemed overgraded or not authentic, PSA will either pay the difference in the case of an over grade, or buy it back in the case of an not authentic card.
Does SGC offer a similar guarantee? Wasnt there much speculation about the gretzky Wagner and if the owner would take advantage of the PSA guarantee to the tune of 2.8 million?
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