The case for old and new certifications in PSA

[Will]

This post from @pfm is a great one on the topic. The “stickiness” aspect is something I think is important to think about

Psa grade old card

Two things to note: A PSA 10 with significant damage is a mistake. Mistakes happened back then and they happen today, they happen with PSA, CGC, BGS, PFM grading, etc. We can discuss whether these mistakes are more or less common between eras and companies but ultimately there’s no real way to know. The thing that’s always left out of these conversations is what I’ll call card “stickiness”. When a card is bought, there’s a chance the same copy will end up on the market again within 3 years…