This Autographed 16x20 Photo has been Personally Signed by Shaquille O'Neal of the Los Angeles Lakers. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. This is a BAS Witnessed Protection Program item which means a Beckett Authentication Service representative was present when this item was being signed.The authenticity can be verified on Beckett Authentication Services website. ..