Toned and clear coated W.Harridge American League baseball which was thrown out by President Harry S. Truman as the ceremonial first pitch to open the 1950 MLB season. The ball is signed by Truman in fountain pen on side panel rating 7 out of 10. Adjacent side panel displays period inscription in red ink, "Pres. Truman Caught This Ball Thrown by Him Opening Season 1950". Inscription has a few areas of fading and small abrasions but remains clearly legible. Baseball itself shows age and handling wear from display including tiny mounting hole on side panel. The ball originated from the personal collection of former Washington Senators first baseman Eddie Robinson who caught the baseball as thrown by Truman. Importantly, the baseball is accompanied by a period photograph taken shortly after the ceremonial pitch showing President Truman handing Robinson the offered baseball likely after obliging with his autograph. An additional copy of the identical photo with Robinson's signature (copy of original) is also included. Presidential first pitch baseballs have become engrained within the fabric of the beginning of the baseball season during the 1900-60s era. The offered example may well be the most documented of that coveted and limited population. Includes hand written letter of provenance from Eddie Robinson confirming he caught the offered baseball, vintage 8"x10" photo of Robinson with President Truman, and two full LOAs from PSA/DNA (Truman signature and Robinson letter): Ball: VG, Signature: EX/MT-NM