Alvin Robertson Autographed San Antonio Spurs 8x10 Dunk Photo - Beckett W Hologram *Silver This is a hand autographed 8x10 Photo of Alvin Robertson of the San Antonio Spurs. This item has a Beckett Witnessed Authentication, which comes with a Beckett numbered sticker hologram and a QR code for verification. You can view this item on the Beckett Authentication 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.