This is a Authentic Signed 8X10 Photo that has been Personally Signed & Autographed by O.J. Mayo of the Memphis Grizzlies. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services #B71559. We offers a 100% Lifetime Guarantee on all Autographed & Signed O.J. Mayo memorabilia. Industry-Leading Autograph Experts Unite with an Iconic Hobby Brand: Introducing Beckett Authentication Services (BAS)The most respected autograph authentication experts in the world have teamed up with one of the most respected brands in collectibles. Beckett Authentication Services (BAS) is led by renowned autograph expert Steve Grad of Pawn Stars fame, who has spent the last 15 years as the principal authenticator for PSA/DNA. During his tenure, Grad used his expertise not only to build the brand and reputation of PSA/DNA, but also to help establish third party authentication as a universally accepted and respected practice in the hobby. Grad has examined and authenticated some of the finest autographed relics to ever surface in the market, and his opinion is regarded as the "gold standard" among collectors, dealers and auction houses across the world. Since 2013, Grad has also served as an autograph expert for Pawn Stars on The History Channel, and will continue to appear on the popular show representing BAS. Joining Grad on the BAS authentication team is Brian Sobrero. An authenticator with PSA/DNA since 2009, Sobrero''s extensive experience in the autograph business combined with his unique skill set have quickly propelled him to becoming one of the most respected opinions in the autograph industry. Together, the team of Steve Grad and Brian Sobrero, combined with Beckett --a pillar of integrity in the collectibles marketplace -- makes Beckett Authentication Services the new leading force in autograph authentication.