Spalding Basketball signed by the 1997-98 Seattle Supersonics. This ball has 14 signatures from the 1997-98 Supersonics. The ball is signed by the following players: (All 14 signatures have been authenticated by PSA/DNA) 14 signatures Nate McMillan Detlef Schrempf Vin Baker Hersey Hawkins Gary Payton and 9 others. All 14 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. Don't miss your opportunity to own this one of a kind basketball autographed by the Seattle Supersonics 1997-98 team.