A-13 Oxygen Mask WWll Era ?

[c7zx]

Hello, I thought I would share my latest acquisition. The auction photos didn't show enough details to help me in identification but I took a chance hoping that this was an early MS-22001 Oxygen Mask based on the black straps that looked identical to the ones I've seen on an A-15 prototype mask (NIB) that I have and is dated 1945.

 

The mask arrived and now I can share more details :

 

MSA / TYPE A-13 / SIZE MEDIUM / ORDER. NO. 30-05344-12277 / SPEC. NO. 3165 / FOR USE ONLY WITH DEMAND REGULATOR.

 

 

All my research always leads me to an article in Sweeting's book Combat Flying Equipment and just a few images on Google. Everything I see matches up with what I've read. Can someone with more knowledge of early oxygen masks shed some light on what I have found? Any info greatly appreciated, c7zx.

 

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[mike korea]

dude you have the mask of your dreams a genuine ww2 a-13 , wow with original harness and all , i have an a-15a too mikekorea

[VenitHora]

http://ww2awartobewon.com/wwii-collectibles/a13-oxygen-mask/

 

Here is another WWII example of the A-13 mask.