psa/dna has gone through a few iterations with these signed flips. the original blue flip had the year/card designation. i believe these cards had a cursory look just to double check on the year/issue to match the order, but certainly it wasn't guaranteed. you would see some valuable cards in these slabs because back then they weren't as valuable!
then they went to the blue "trading card" flip where it was actually written only the signature goes through the authentication process and not the card. here you start to see less of the more valuable/older rookies, and more of the post-1990 mass-produced rookies.
then to keep everything uniformed, psa/dna adopted the red "trading card" flip to match with the red psa style a couple years ago. with these flips you should not see any card of value ($100+?).
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