Original U.S. Vietnam War USAF Flight Helmet Oxygen Mask by Sierra Engineering Co. Martini-Henry Accessories and is in very condition

and is in very condition

This is an excellent condition high grade Rural Police 1936 Officers pattern Tschako

The receiver area still has some of the original case hardening on the internals

The pack is in good condition and appears complete and without severe damage

To attain this goal

Original U.S. Vietnam War USAF Flight Helmet Oxygen Mask by Sierra Engineering Co. Martini-Henry Accessories and is in very conditionOriginal Item. Only One Available. Heres a great piece often missing from Vietnam War flight helmets, the oxygen mask. This mask is in fantastic unissued condition and would pair beautifully with a helmet. The mask retains its original tube without any serious damage. There is a makers tag on the end piece reading: 92114 ASSY 232 94A SIERRA ENG. CO. The rubber mouthpiece is also marked: OXYGEN, MBU 5 P SIZE REGULAR NARROW FSN 1660 794 0855 This is a