This Autographed Spalding Official NBA Game Basketball has been Personally Signed by Michael Jordan, Magic Johnson, Larry Bird, Charles Barkley, John Stockton, Karl Malone, Scottie Pippen, David Robinson, Patrick Ewing, Chris Mullin, Clyde Drexler & Christian Laettner. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website.