Many collectors have undoubtedly encountered this problem, you submit two seemingly identical modern cards to PSA for grading, one card comes back the PSA Gem Mint 10 you expected, while the other comes back a PSA Mint 9. You may be left scratching your head after the grading results are posted for your order.
Well, your PSA 9 may be the victim of a print defect or “PD”. “PD” is the flaw in the printing process that causes a card to have some degree of “snow”, a possible print dot (some print dots come in the form of the well-known “fish eye”), or a print line of some sort on the surface of the card. Continue to read the full story on PSA’s web site here.