MBU-5P Pilots Oxygen Mask

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Mint unissued MBU-5/P oxygen masks, these are all late 60's to early 70's dated made by Sierra MFG Co.
They were made for the Vietnam war and have been in storage ever since.  They come with the socket, hose, valve, soft inner and hard outer, they also come in a variety of sizes.  Numbers found on them include Mil.M.27274C (USAF), PN 450.191, PT No 450-05 G.E., FSN 1660-794-0855, pn 450-09A, MFG 92114. The rubber inners and the hoses are still like new and the hard outer has no cracks.


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