2025 Leaf Sports Heroes John Stallworth Inscriptions on Card Auto 5/100. This autographed trading card features the legendary Pittsburgh Steelers player in the National Football League, John Stallworth. Part of the Leaf Metal Inscriptions set, this card is serial numbered 5/100 and comes with blue inscriptions, making it a rare and valuable addition to any sports card collection. The autograph is on card and inscribed 4x SB Champs.