Spalding Basketball signed by the 2013-14 San Antonio Spurs. This ball has 11 signatures from the 2008 Silver Stars. The ball is signed by the following players: (All signatures have been authenticated by PSA/DNA) Notable signatures include Vickie Johnson, Erin Perperoglou, Becky Hammon, and Helen Darling. All 11 autographs on this basketball were authenticated by a team of experts at PSA/DNA and comes with a Letter of Authenticity so you can rest assured you are purchasing the real deal.