This Autographed 14x22 Poster has been Personally Signed by Shaquille O'Neal, Charles "Bo" Outlaw, Alton Johnson, Henry Embry, Joe Harmon, Calvin Thomas, Artie Griffen, Philip Harriosn, Ben Peavy, & 4 more. 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.