Does PSA grade against curvature on Kellogg's cards?

KallMaloneSay

I just bought two plus sets of 71 Kellogg's football and have some really clean, uncracked cards, but all of the cards have a bow typed curve to them at the ends. Does PSA grade against this bend and also is there a decent way to straighten them out, like maybe keep them in a screw down for a day? Any help would be appreciated, Jason

KallMaloneSay

Also, there doesn't seem to be a premium on PSA 9 1970 Kellogg's football, but when looking at the population reports it looks like there are about 5 times as many of the 70's as compared to 71's. Would it be worth it to submit the clean 71's or should I not bother?

DirtyHarry

Good post Kallman - I have been wondering if there is a curvature factor when cards are graded. When you read the PSA standards, there is no mention of curvature. I have many 60's baseball that have a curve because I did not store them properly. And I am wondering if this may explain some lower that expected grades I got on a few that I submitted.