Posted By:
BobPeter- I think only in the perception of value by the collector. There's not a lick of difference between an authentic GAI, PSA or SGC card and yet my gut feeling is that a PSA authentic will sell for more than a comparable condition problem SGC authentic card which will sell for more than a comparable condition problem GAI authentic card. Don't ask me why. I have a couple of gorgeous HOF caramels which are in GAI authentic slabs and they'll stay there but I realize I could probably get more for them if I ever sold them in they were in PSA holders.
tbob