This Autographed Bobby Brown Oal Baseball has been Personally Signed by Muhammad Ali Cassius Clay. This item is 100% Authentic and comes with a PSA/DNA Certification numbered Hologram. Please note that PSA/DNA no longer provides serial-numbered COA cards, and the attached PSA/DNA sticker will serve as the complete authentication for this item. The authenticity can be verified on Professional Sports Authenticators website. The ball does not come with a matching LOA, however the cert and photo of the ball do show up in the PSA database.