PSA-Graded Nolan Ryan Gem Mint 10 Autograph on a Gem Mint 10 OML Selig Baseball. Lot 376. PSA-Graded Nolan Ryan Gem Mint 10 Autograph on a Gem Mint 10 OML Selig Baseball. It doesn’t get any better than this! PSA-DNA graded and encapsulated this beauty! The signature is on the sweet spot. A PSA-DNA Letter of Grading and Authenticity is included. Winning Bid $100. Back to List Winning Bid $100 Back to List