U.S. Air Force MBU-13/P Chemical-Biological Oxygen Mask
The U.S. Air Force MBU-13/P Chemical-Biological Oxygen Mask was usually paired with the HGU-39/P helmet. It was issued with a tinted visor with velcro fasteners, and a sock to protect the visor when not in use. This example was made by Scott in 1984.
Similar masks in my collection: U.S. Air Force MBU-5/P, MSA ClearVue Model "S", MSA ClearVue Chin-Type, Scott Industrial, Scott Chin Style
"MASK, CHEMICAL-BIOLOGICAL-OXYGEN 07878/76211 92114 SCOTT PN 651-475-1"
"SERIAL NUMBER 41984"
Manufacturer, date, and part number stamps on cheek "MFR 92114" "83/84/85" P/N 551-11-19"
Manufacturer stamp on forehead "SCOTT ATO"
Date stamp on nose cup "81/82/83"
Stamps at top of hose "NEXUS 79A/U" "266-632" "SCOTT ATO"
Stamp on hose "100"
Manufacturer stamp on hose "SCOTT ATO"
Manufacturer stamp on hose "SCOTT ATO"
Top of communications cable "ASTROCOM"
End of communications cable "U/173/U" "CORD CX-4707C/AIC" "18068"
End of communications cable "ASTROCOM" "10438A"
Cloth cover to protect against scratches when not in use "STRETCH"