Apollo 15 Jim Irwin Signed First Day of Issue CoverBoldly signed by Jim Irwin the 8th man on the moon. An Apollo 15 first day of issue postal cover signed by U. S astronaut and moonwalker Jim Irwin. Affixed with stamps designed by the celebrated space artist Robert McCall, commemorating Apollo 15 and a decade of American achievement in space. Postmarked on the first day of issue, Aug 2, 1971. Neatly signed by Irwin in black ink, and in very fine condition. Jim Irwin was the lunar module pilot for the