I am aware that removing the residue would be altering the cards. Doing this for a few years myself (40+). And also aware that if I did clean them up, it would be apparent to PSA and was not asking about grading. I had a customer ask and as I have seen that there is a method to clean them up, I was looking into it. Not really worth the hassle. But thank you for your feedback.
I was thinking that they would be the actual grade + the qualifier and not just a straight 1. Might be wrong.
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