FLOWN Apollo 11 communications headset ear tube assembly used during the Apollo 11 moon walk by Buzz Aldrin. Approx. 8 in. long tube with ear piece. The assembly was an acoustic device to allow sound to travel to the ear while mounted in the headset assembly. Aldrin used the headset during many phases of the Apollo 11 mission and during the complete moon walk period. [With:] Typed letter signed by Aldrin. (2)