This Autographed Riddell Full Size Speed Rep Helmet with the inscription of "The Original, Who's Your Daddy?, MVP Maker" has been Personally Signed by Pat Mahomes Sr. of the Kansas City Chiefs. 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.