I finally heard back from PSA about this issue. They said (in part) the following:
Quote:
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According to the research team, the difference between OPC and Topps for this specific set is that there is a slight gloss on the back of Topps stickers where the OPC is completely matte.
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I hope this helps. And I'm not sure if there is any correlation between the asterisks and the gloss on the back. But if anyone here thinks they have mislabeled stickers, feel free to ask PSA to re-slab them, as I am sure they will. (They offered to re-slab my last order's sticker, but I already sold it.)