Mask, Oxygen, Type MS-22001. Size small. Developed from the WW2 A-13A, this pressure demand oxygen mask appears to date from March 1954 and is fitted with a webbing harness and green plastic exoskeleton. The rubber is in very good pliable condition with no cracking or visible crazing that we can see. Note that the cheek flanges have not been custom trimmed and remain 'as issued'. The harness webbing is good but there is surface corrosion of metal parts. The oxygen hose is generally good but does have some cracking within the corrugated folds and the band which secured wiring (when supplied). The hose is fitted with a British MC3A/1 connector (stores reference 6D/2003). Unwired. Stock code O26102.