Original Czech Post-WWII Czechoslovak Air Force Flight Helmet with Oxygen Mask, Avionics, & Flight Goggles - Size 58 French Awards Medals Badges Insignia and this is a post-war

and this is a post-war installed leather example

It failed because it was unpractical and too bulky and was eventually replaced by the M-2 version

A very scarce WWI Hand Grenade

with no cockade

Original Czech Post-WWII Czechoslovak Air Force Flight Helmet with Oxygen Mask, Avionics, & Flight Goggles - Size 58 French Awards Medals Badges Insignia and this is a post-warOriginal Item. Only One Available. The Czechoslovak Air Force (eskoslovensk letectvo) or the Czechoslovak Army Air Force (eskoslovensk vojensk letectvo) was the air force branch of the Czechoslovak Army formed in October 1918. The armed forces of Czechoslovakia ceased to exist on 31 December 1992. By the end of the year, all aircraft of the Czechoslovak Air Force were divided between the Czech Air Force and the Slovak Air Force. This is a scarce Post