This Official Major League Baseball has been personally hand-signed by 1986 World Series Hero Mookie Wilson & Bill Buckner who comitted the infamous error that cost the Red Soz Game 6 of the 1986 World Series. This item was signed by Mookie in the presence of and witnessed by a representative of James Spence Authentication and was previously signed by Bill Buckner who has his own JSA COA. It comes with TWO 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.