Pre-order autograph signing through the TRISTAR Autograph Pavilion at the 46th National Sports Collectors Convention, Donald E. Stephens Convention Center, Rosemont IL, July 29 – August 2, 2026.
About Bert Blyleven
Minnesota Twins Legendary Pitcher; 2x All-Star; 2x World Series Champ; Pitched No-Hitter on 9/22/1977; Twins Hall of Fame; Jersey #28 Retired by Twins; Hall of Fame 2011
Mail-in deadline: your item must arrive at Golden State Memorabilia by July 15, 2026. Items will be returned following the conclusion of the convention, and we'll ship to you immediately after.
Authentication
PSA, TRISTAR, or Beckett will be authenticating items at the signings. Add the $15 Authentication option to your order if you'd like your item authenticated.
Item tiers
- Regular — $95.00. Flat item up to 8x10, or baseball (excludes HOF yellow postcards).
- Premium — $105.00. Flat item larger than 8x10, HOF postcards, or any item not listed.
- Full Size — $126.00. Full-size bat, jersey, jersey #, artwork or game-used item.
- Inscription — $32.00. One (1) career achievement, or a personalization up to 3 words.
Players reserve the right to reject any item. Pricing subject to change.