POP Reports
 

Does anyone have a link that shows POP reports for signed cards? Working on a signed set and curious as to how many of the cards are actually possible to attain in theory.

Depending what issue / year you are looking for, go to the PSA site. Under POP Report, scroll to the end of the regular pops for the issue / year you are looking for and they usually have a pop report for PSA DNA. I don't use SGC, so no idea what, if anything they have for pop reports.