This baseball has been personally hand-signed and inscribed "hof 2019" & "1st unanimous vote" by mariano rivera. it comes with an individually numbered, tamper-evident hologram from steiner sports. 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 baseball is limited to 42 and you are bidding on a random number from the edition.