This very rare vintage baseball was hand signed by New York Yankees Hall of Famer Roger Maris. It is accompanied by a Certificate of Authenticity from Palm Beach Autographs and JSA Full Letter of Authenticity. A tamper-evident hologram will be affixed to the item. Signed items are guaranteed to pass any third-party authentication with 100% Money Back Guarantee. Each signature is witnessed by a member of our staff or comes out of a private signing.