Description:Warren Spahn single signed baseball from 8/11/1961 300th Victory Game. Cream color Giles NL ball signed on a side panel, "To Bill Jackowski Best Wishes No. 300 8/11/61 Warren Spahn." Ball originated from the personal collection of Jackowski who was a former Major League umpire and does show several indications that it had been used in the game itself. A very interesting historical baseball with direct provenance. Includes LOA from PSA/DNA J.Spence-S.Grad: EX-MT