This Official Major League Baseball has been personally hand-signed by Yankees Perfect Game hurler David Wells. David added a ONE OF A KIND type of inscription to these OMLBs with "Hangover+CB=PG" standing for Hangover+Curveball= Perfect Game to commemorate the legendary story of the "night before the perfect game". He also added an additional inscription of the date of the Perfect Game, "5-17-98". This is NOT your -everyday item and are EXTREMELY limited. David would only sign 6 of these and said he'd never sign any more like it!! This item was signed in the presence of and witnessed by a representative of James Spence Authentication. It comes with an 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.