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.