This baseball has been personally hand-signed by Sparky Lyle, Goose Gossage, Bucky Dent, Reggie Jackson, Willie Randolph, Mickey Rivers, Chris Chambliss, Roy White, Graig Nettles, Paul Blair, Lou Piniella and Ron Guidry with the inscriptions "NYY 4 DODGERS 2, GAME 4 WIN, 78 WS MVP, MR. OCTOBER, 78 WSC, 6 WS HITS, 78 GOLD GLOVE, 9 RUNS, 78 GG, 375 BA, 4 RBI'S, CY78." It has been obtained under the auspices of the MLB Authentication Program and can be verified by its numbered hologram at MLB.com. It also 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.