PSA autograph authentication
I've been thinking about this trend to have vintage rookie cards autographed, and I was wondering how often PSA actually comes back and says that an autograph is NOT authentic when it actually is (for instance, a submitter has the autograph done in person, but sends it in, and it comes back as inauthentic).
At the same time, I wonder how often inauthentic autographs make it into slabs. The value increase that an autograph provides for, say, a vintage HOF rookie card, creates a significant incentive for all sorts of shenanigans.
So how good is PSA at this, really?
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