Hakeem Olajuwon Houston Signed 16x20 Dunking Over Bulls Photo- JSA W Auth Hakeem Olajuwon Houston Rockets Autographed 16x20 Dunking over Armstrong of the Bulls. This item has a James Spence Witness Authentication, which comes with a JSA #'ed Sticker and a matching JSA COA. You can view this item on the JSA website. 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.