WWII Optical Gas Mask. The item “Rare Original WWII US Navy Optical Gas Mask” is in sale since Tuesday, February 2, 2021. This item is in the category “Collectibles\Militaria\WW II (...
Made in the USA. Military Grade HG4/P MILS-25948. AO American Optical Original Pilot Matte Chrome Gray Non-Polarized USMC USAF USN. How to choose the proper frame size. 52mm: (133mm Frame Width or 5.2...