![M. 1938 is a gas mask produced in Denmark from 1938-1941, this kit in specific would be issued to civilians the mask thread is 42mm and the kit includes the facepiece, cardboard M. 1938 is a gas mask produced in Denmark from 1938-1941, this kit in specific would be issued to civilians the mask thread is 42mm and the kit includes the facepiece, cardboard](https://preview.redd.it/q0o51f9mctc51.jpg?auto=webp&s=8d4801e96f44d6f895fb1b749bd44747d59a33c2)
M. 1938 is a gas mask produced in Denmark from 1938-1941, this kit in specific would be issued to civilians the mask thread is 42mm and the kit includes the facepiece, cardboard
![Military equipment of the 20th century: Czech FM3d gas mask - Danish civil denfence gas mask "Model F" 1940, Military equipment of the 20th century: Czech FM3d gas mask - Danish civil denfence gas mask "Model F" 1940,](https://1.bp.blogspot.com/-fNXzLKx9KsA/TwsR7p6TCWI/AAAAAAAAAwc/SAjmi7s7U74/w1200-h630-p-k-no-nu/maske+1.png)
Military equipment of the 20th century: Czech FM3d gas mask - Danish civil denfence gas mask "Model F" 1940,
![Original British WWII P-1944 Paratrooper Gas Mask - German Filter Conv – International Military Antiques Original British WWII P-1944 Paratrooper Gas Mask - German Filter Conv – International Military Antiques](https://www.ima-usa.com/cdn/shop/products/bg1944__9_1024x1024.jpg?v=1602130428)