This usc trojans 16" x 20" photograph has been personally hand-signed by caleb williams with the inscription "fight on" and "superman." it is officially licensed by the ncaa and comes with an individually numbered, tamper-evident hologram from fanatics authentic. to ensure authenticity, the hologram can be reviewed online. this process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud. this photo is limited to 25 and you are bidding on number "25" from the edition.