Buck Leonard Autographed Perez Steele Greatest Moments Card. Signed in blue sharpie across the front of the card. Authenticity is provided by James Spence authentication and will be accompanied with a COA from JSA, Cert #HH69188. Numbered3023 out of 5000. . If a product is unsigned or non game-used, a hologram will not be included. Buck Leonard memorabilia. memorabilia.