This Sam Game Model Bat has been personally hand-signed by NY Yankees Star 1st Baseman Luke Voit. This is the same bat that Luke Voit uses when he steps up the plate to smack out Homerun after Homerun! This item was signed in the presence of and witnessed by a representative of Major League Baseball and Fanatics. It comes with an individually numbered, tamper evident sticker from BOTH MLB & Fanatics 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.