Its labeled with NSN# 1660- 01-012-8108 and dated 12-77, tanks are rated for 2100 psi.
When I look it up the description is OXYGEN SYSTEM, FREE FALL, and it appears under the Aircraft Components and Accessories / Aircraft Air Conditioning, Heating, and Pressurizing Equipment section.
Other oxygen tanks Ive seen used by parachutists are single tank items, so I was wondering if it might have been for emergency use in an aircraft of some kind.
Any info is appreciated!
Edited by FTLewisBrat, 19 December 2018 - 10:13 AM.