What does this mean? Anybody?
I wish PSA would let us know what changed.
New items have been added to the set or items have been deleted, most likely the former. For additions, there's a "NEW" flag in red by recently added items. What set?
I have also seen where they change the value of a card in a set. If you look at the View set checklist tab, each card in the set is assigned a weighted value, add each card up for a total composite weight for the set. If they change the weighted value of a specific card, it alters or changes the composite total of the set. In this way the "composite definition" of the set has changed.
The set in question is the 1951 Bowman set
I agree that PSA could add a reason the set changed. That information would be nice.
I suppose if they did that a bunch of people would call them to argue about it.
If it's 51B baseball, this one almost has to be the weighting change mentioned by JRR. I thought they were supposed to send polls out for existing sets that had a certain number of collectors to get concurrence on weighting modifications, but I could be mistaken.
Maybe someone got a new highest graded on a card so it changed the top pop bonus.