This Event Cover has been personally hand signed by the Boston Celtics foward Bill Russell with the inscription '241/300.' Bill is one of the 50 greatest players of all time he has 5 MVP awards and has won 11 championships in 13 years and coached the Celtics to two of those championships. This event cover 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.