This 8x10 Frank Costanza photo has been personally hand-signed by Legendary Seinfeld actor, Jerry Stiller. This has been thoroughly examined and deemed 100% Authentic by a representative of Professional Sports Authenticator (PSA/DNA). It comes with an individually numbered, tamper evident sticker from PSA/DNA 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.