This 11x14 Photo has been personally hand-signed by Hall of Fame Pitcher Mike Mussina. Mike has added the inscription "HOF 19" to this fantastic piece. This has been thoroughly examined and deemed 100% Authentic by a representative of James Spence Authentication. It comes with an individually numbered, tamper evident sticker from JSA 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.