Accident-prone naval airship that was lost in a weather-related accident on April 4, 1933, killing 73 of the 76 crew and passengers on board. Commemorative Navy Department penalty cover honoring the loss of the Akron, postmarked 1933 on the reverse, signed in ink by the ship’s only three survivors, Herbert V. Wiley, Richard E. Deal, and Moody E. Erwin. A light, uniform block of toning from previous display, light creasing, and a typed address, otherwise fine condition. Accompanied by a TLS of provenance from Deal, dated May 30, 1933. RRAuction COA.