DESC: Bill Russell Autographed Boston Celtics 8x10 Photo. This product is officially licensed by the National Basketball Association and comes with an individually numbered; tamper evident hologram from Mounted Memories. To ensure authenticity, the hologram can be reviewed online. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud. Bill Russell Autographed Boston Celtics 8x10 Photo. This item comes with a Certificate of Authenticity (COA) from Mounted Memories and includes their matching holograms. Mounted Memories is the largest signing company in the country and Dan Marino serves