This Autographed Game Used Louisville Slugger Player Model Baseball Bat has been Personally Signed by Tom Glavine of the New York Mets. 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 bat does not have authentication for it being game used, however, it does match and is consistent with known exemplars from this era.