This Autographed White Majestic Coolbase Jersey has been Personally Signed by Patrick Corbin of the Washington Nationals. 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 Patrick Corbin 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.