Giannis Antetokounmpo Autographed NBA Official Basketball - JSA W Auth *Silver This is a hand autograph of Giannis Antetokounmpo on an Official NBA Spalding Game Ball Series Basketball. This item has a James Spence Witness Protection Authentication, which comes with a JSA numbered sticker and a matching JSA Certificate of Authenticity. It was signed either at a public autograph appearance or a private signing. This is a stock photo of the item. Although you may not receive this exact item, the item you receive is virtually identical and brand new in great shape.