This Victus brand GAME MODEL Bat has been personally hand-signed by Mets Outfielder AJ Ewing. These are the same style bats and dimensions that AJ Plays with! This item was signed in the presence of and witnessed by a representative of Beckett Authentication. It comes with an individually numbered, tamper evident sticker from Beckett which can be reviewed online to ensure authenticity. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud.