Original U.S. WWII USN ND Mark IV Diaphragm Gas Mask Converted to Shallow Diving Respirator Antique Long Guns On 2 March

On 2 March

is one such item

and the other information is much more basic than seen on army tags

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

There is no Maker's mark or signature of place of origin marked anywhere on the gun

Original U.S. WWII USN ND Mark IV Diaphragm Gas Mask Converted to Shallow Diving Respirator Antique Long Guns On 2 MarchOriginal 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