Original U.S. WWII USN ND Mark IV Diaphragm Gas Mask Converted to Shallow Diving Respirator Antique Long Guns one of which even still

one of which even still has some red oil pencil markings on it

The MiG-29 entered service with the Soviet Air Forces in 1982

and no major wear or tears

an engineer and senior NSDAP

Escadrille 3 Les Cigognes ('The Storks') was a famous French aviation unit during the World War I

Original U.S. WWII USN ND Mark IV Diaphragm Gas Mask Converted to Shallow Diving Respirator Antique Long Guns one of which even stillOriginal Item. One of a Kind. This is a very interesting example of the U. S. Navy Diaphragm Mk IV Gas Mask, which has the canister entirely removed with a new tube and valve attached for attachment to an oxygen tank. Additionally, the vent on the front has been entirely closed off, so that the mask could be used for shallow diving and likely ship repair. The U. S. Navy Diaphragm Mk IV Gas Mask was an updated version of the U. S. ND Mk III, but with