This Autographed White Pro Style Jersey has been Personally Signed by Felix Hernandez of the Seattle Mariners. This item is 100% Authentic to include a hologram by Beckett Authentication Services. This item will come with an affixed Beckett Authentication Services (BAS) authentication sticker, which includes a scannable QR code to verify authenticity. Please note that Beckett no longer provides serial-numbered COA cards, and the attached BAS sticker will serve as the complete authentication for this item. The authenticity can be verified on Beckett Authentication Services website. This is a X-Large sized, non-branded, custom-stitched Jersey. This jersey was also Witnessed and authenticated by JSA, however, it will not come with its matching JSA card. Its authenticity can still be verified on JSA's website.