[ALR-bishop]

Topps may or may not have cut them. I have several full uncut Topps proof sheets and know people in the hobby who are very good at cutting such sheets into individual cards. But the hand cutting may not be the key. Do an eBay search for Topps proofs and then narrow it to graded auctions and see if you find proof cards that PSA has graded numerically. I know you will find them with numerical grades from other grading companies

Another option is to take your question to PSA by posting your question on their Collector's Universe board