This official Schutt NY Yankees Pitching Rubber has been personally hand-signed by Perfect Game pitcher David Wells. To commemorate his Perfect Game David added the following inscriptions to this piece, "Yankees 2nd Perfect Game", "May 17th, 1998", "27 Up, 27 Down", & "11Ks". This item was signed in the presence of and witnessed 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.