I would guess the Raw Card Review grades by Beckett maybe don't qualify for the authenticity guarantee (either as slabbed and sent to PSA or raw and sent to CSG). If the card comes and you like it and everything seems fine, then seems like you're getting what you expected...just without the ebay guarantee.
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If you want a deal, you might not get a card. If you want a card, you might not get a deal.
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