This Autographed Bobby Brown Oal Baseball has been Personally Signed by Nolan Ryan, Tom Seaver, Steve Carlton, Early Wynn, Gaylord Perry, Phil Niekro, Don Sutton & Warren Spahn. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website.