Can someone give me an ID on the type of mask I have here? Thanks!

[ChrisG43]

Title pretty much says it all, obviously not in the best of shape...

[HUD69]

Hi,

 

This is a Mine Safety Appliance made A-13A oxygen mask. 

 

 

[HUD69]

The A-13 mask was the first American pressure demand aviation mask produced in America, being developed in about late 1944. The A-13 mask was slightly modified and standardised as the A-13A which the Navy and Air Force used in the late 40s and early 50s until the A-13A (with a few minor changes again) became standardised as the MS22001 oxygen mask. The US Navy continued to use the original A-13A through the late 50s, later going to the MS22001 also.

[Ultra Hog]

This is a MS22001, it’s written on the mic bulb on the front. 😉

[phantomfixer]

When is a 22001 an A-13a or a MBU-3/p

 

I recently sold a a MBU-3/p, marked near the chin… the 3/p label was added by life support/ depot? the body was also marked in the factory mold as a 22001..it had straight bayonets to attach to helmet

[JohnK83882]

I thought it was the A-14. Shame to waste a link, though. https://www.flightgear.ch/usaaf-a-11

[AMT500E]

Even more curious is why it's assumed to be an A-13?

Clearly marked MBU-3p by Sierra.

What components on this mask would change the designation from MBU-3 to A-13?

[phantomfixer]

4 hours ago, AMT500E said:

Even more curious is why it's assumed to be an A-13?

Clearly marked MBU-3p by Sierra.

What components on this mask would change the designation from MBU-3 to A-13?

That’s my bad.. the OPs is not marked MBU-3…the MBU-3 is/was mine as reference

[BlueBookGuy]

The MS (Military Standard) - 22001 designation came in March 1951, the MBU-3/P in March 1958.