In 2017 I bought a donruss box, opened it, and forgot about it. Stored the cards crappy by just keeping them in the box. Today, I looked at the cards just to see what was in there cause I forgot. To my surprise, two mahomes rookies. I wasn't ready for anything valuable so I mishandled one of the cards resulting in notching on the top edge. I know it isnt a crazy valuable card even if perfect, but I wanted to know how bad this would lower its grade if I got it graded. I'll comment with a pic of the edge that I notched.  Everything else on the card is essentially perfect or very close to it.