Relive the home run chase that captivated the sports world with PSA Autograph Series signings featuring Mark McGwire and Sammy Sosa. ➜ Single and dual signing options ➜ Career home run inscription add-ons available ➜ Cards, magazines, and jumbo items accepted

Relive the home run chase that captivated the sports world with PSA Autograph Series signings featuring Mark McGwire and Sammy Sosa.

➜ Single and dual signing options

➜ Career home run inscription add-ons available

➜ Cards, magazines, and jumbo items accepted

— @PSAcard Jul 10, 2026