U.S. Army M25A1 Chemical-Biological Tank Mask

The U.S. Army M25A1 Chemical-Biological Tank Mask was an upgrade of the earlier U.S. Army M14 Tank Mask and U.S. Army ABC-M24 Aircraft Mask.  Like the M14, the M25 series used a female microphone attachment.  This example was made by Acushnet in 1986.

 

Similar masks in my collection:  U.S. Army ABC-M24