This Autographed White Majestic Cool Base Jersey with the inscription of "Not Justin" has been Personally Signed by Shane Bieber of the Cleveland Indians. 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. This is a stock item. We conducted an autograph signing with Shane Bieber and we have several of these available. The one you will receive will be of equal quality to the one pictured. This item can be verified through BAS Witnessed. This is a X-Large sized Jersey.