Alperen Sengun Autographed Rockets 16x20 Dunk Photo - Tristar *Silver This is a Hand Autographed 16x20 Photo of Alperen Sengun of The Houston Rockets. This item has a Tristar Authentication, which Comes with a TriStar #'ed Hologram and a QR code for verification. You can view this item on the Tristar 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.