FDC with a cachet honoring ‘10 Cent Embossed Air Mail,’ postmarked in Chicago on January 8, 1968, signed in blue ink, “Lt. Fred J. Olivi, Co-pilot on ‘Bockscar,’ H-Bombing of Nagasaki, 9 August, 1945." In fine condition. Encapsulated in a PSA/DNA authentication holder, grading the autograph as "GEM MT 10.”