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.

PATENT

Label
Label

"MASK, CHEMICAL-BIOLOGICAL-OXYGEN 07878/76211 92114 SCOTT PN 651-475-1"

Serial number
Serial number

"SERIAL NUMBER 41984"

Rubber stamps
Rubber stamps

Manufacturer, date, and part number stamps on cheek "MFR 92114" "83/84/85" P/N 551-11-19"

Rubber stamp
Rubber stamp

Manufacturer stamp on forehead "SCOTT ATO"

Rubber stamp
Rubber stamp

Date stamp on nose cup "81/82/83"

Stamps
Stamps

Stamps at top of hose "NEXUS 79A/U" "266-632" "SCOTT ATO"

Hose stamp
Hose stamp

Stamp on hose "100"

Hose stamp
Hose stamp

Manufacturer stamp on hose "SCOTT ATO"

Hose stamp
Hose stamp

Manufacturer stamp on hose "SCOTT ATO"