[Snapolit1]

You have a high end Topps card that PSA graded a number of years ago before they started specifically registering different color backs. Let's theoretically says its a 9 and there are only a small number of them with this color back. Great iconic card. You want to get it swapped into a new holder and re-registered to reflect the fact that it has the favored back. Do you bring it back to PSA and tell them you want it reevaluated and you won't take anything below the original grade? Or do you roll the dice and try to get a 98 or 100 from SGC? Entirely theoretical of course.