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Josh K.The best looking slabs, IMO, are SGC and GAI. SGC seems preferred by most people on this board for grading vintage cards. There are no slabs as simple as you describe - a top loader w/o more would allow some dishonest sellers to switch poorer condition cards (or worse) for the card that had been authenticated. I do believe GAI has a "pregrade" service where they will put the card in a top loader with a GAI label across (and sealing) the top. The label assigns an expected grade should you get the card slabbed. Im not sure if that service is only available at shows or if you can send cards in for it as well.