Featured is a Dirk Nowitzki signed Dallas Mavericks Spalding NBA basketball. This photo was hand signed by Dirk Nowitzki and authenticated by Panini authentication services. Included with the photo is a Panini hologram and certificate of authentication. This item would make a great addition to any sports memorabilia collection!. SPECIFICATIONS Autographed By: Dirk Nowitzki Team: Dallas Mavericks Sport: Basketball Authentication: Panini Authentic