WW1 FRENCH ARMY ADRIAN HELMET
Whilst the German Army in WW1 had the Pickelhaube and later the steel trench helmet and the US, Australian and British troops had the Tommy helmet, the French had the Horizon Blue French Adrian helmet which was also used by the Belgium troops as well.
This combat worn helmet is the standard WW1 French helmet identifiable by traces of Horizon Blue colour and the leather chin strap which is still present and in good condition. WW1 French helmets are getting scarcer as the years go on as is the WW1 German and British Tommy helmets.