This is an Official 2022 World Series Baseball that has been hand signed by Yordan Alvarez. This item was inscribed "2022 WS Winning 3-Run HR." This item has been witnessed and certified authentic by Beckett Authentication (BAS) and comes with their tamper-proof witness sticker. Beckett Authentication has recently changed their physical certificate card policy where they no longer match their tamper-proof sticker with a physical certificate. A certificate can be printed on Beckett's website for the matching authentication number.