This 8x10 photo has been personally hand signed by Cheech Marin and Tommy Chong under the direct supervision of American Icon Autographs. This item was hand signed by Cheech and Chong and comes with an individually numbered; tamper evident sticker from the industries leading autograph authenticator PSA/DNA and comes with a lifetime guarantee. 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.