Signed at B&C Sports Public Signing on 9.21.2017 - Comes with Certificate of Authenticity from 757 Sports Collectibles - The alphanumeric code on the hologram can be looked up on the 757 Verify Authenticity tab - The tab will give you all information about your autographed item - Guarenteed to pass any reputable 3rd party authentication (JSA or PSA) or 200% of your money back.