Ralph Sampson/Hakeem Olajuwon Autographed Wilson NBA Basketball - JSA Witnessed *Silver This is a hand autographed Basketball of Ralph Sampson/Hakeem Olajuwon on an Official NBA Wilson Basketball. This item has a James Spence Witness Protection Authentication, which comes with a numbered sticker and a matching JSA Certificate of Authenticity. You can view this item on the SpenceLOA website and it shows when and where the item was signed. 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.