This Autographed Louisville Slugger Player Model Baseball Bat has been Personally Signed by Roger Maris of the New York Yankees. This item is 100% Authentic to include a hologram by Beckett Authentication Services. This item may come with the new Beckett Authentication hologram that has a scannable QR code rather than the traditional COA. If you would like to have a COA, you are welcome to reach out to Beckett for a printed certification once you receive your item. The authenticity can be verified on Beckett Authentication Services website. This bat also comes with a LOA from PSA/DNA for the signature as well.