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The problem I have is he cites to: N-0 Authentic Only-This means that PSA is only certifying that the item is genuine, without a numerical grade.This may be due to the existence of an alteration, one with malice or otherwise, a major defect or the original submitter may have requested that PSA encapsulate the card without a grade.ooking at his FB I don't think he is a scam artist. He most likely has no idea what he is doing when it comes to cards. He did the right thing and sent the cards in to be graded. Just does not realize what PSA is trying to say that they are reprint.
Pre-shared key. In cryptography, a pre-shared key (PSK) is a shared secret which was previously shared between the two parties using some secure channel before it needs to be used. To build a key from shared secret, the key derivation function is typically used. Such systems almost always use symmetric key cryptographic algorithms.