This Autographed Baden Basketball has been Personally Signed by Clyde Drexler, Jerome Kersey, Terry Porter, Paul Westphal, Danny Ainge, Kevin Duckworth, Rick Adelman, Jack Schalow, Cliff Robinson, John Wetzell, Danny Young, Wayne Cooper, Alaa Abdelnaby & 2 others of the Portland Trail Blazers. 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.