United States Air Force and Navy Type A-13A or MS-22001 Pressure breathing Oxygen Mask; green rubber face mask with green rubber oxygen hose; sage green hard plastic nose piece; chrome steel bayonet attaching clips; internal microphone with black cord; green nylon staps with button snaps and clips; embossed text on nose "MASK, OXYGEN, PRESSURE BREATHING, MS 22001-6 LARGE SIERRA ENG. CO. PN 520-303"; white stencil text on microphones "SECO P/N 241-16, MS 22056-4, FSN 1660-808-8995, DOWN". Created by Eric Long Date Created 02/03/2022 Source Smithsonian National Air and Space Museum Keywords Aviation; Equipment Rights and Restrictions Not determined
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