Huntsville, Alabama May 3, 1980. 3.5 x 6.5", postally used with NASA-MSFC cancel & stamps honoring Alabama & Skylab, with printed illus of space shuttle & drawing of MSFC complex. SIGNED BY NASA ASTRONAUT DAVE GRIGGS "SHUTTLE PILOT." Griggs flew one shuttle mission, conducting the first unscheduled space walk. He died on June 17, 1989 in a plane crash.