[mintacular]

I think most collectors/dealers accept that many cards have this curl, some times described as a vending curl particularly when you get in the 50s. I don't think it is considered a "flaw" or detracts from the value although I can't say for sure how the grading companies handle this issue and if perhaps they would not allow such a card to garner a 9 or 10 for example...I bought a large box of 70 and 71 BB a few years back and hundreds of these cards had that "banana" effect to them they were all pack-fresh.