Posted By:
Eric BrehmIn order to register a card (as part of a set) on the PSA set registry you have to know the PSA serial number. If you enter a serial number that is already being used by someone else on the registry, it will not let you add the card; in that case PSA sends an e-mail to the current registrant asking them to delete the card if they no longer own it, or contact customer service if they do.