Standard issue United States M1 pattern steel helmet, olive drab in colou, stretch cotton cargo type net, with fibreglass liner. On the inside of a strap in the liner '8415-153-6671' is printed in black ink. This number would appear to be the "Federal Stock Number (FSN)" which was used 1949 to 1975 when ti was replaced by "National Stock Number (NSN)' by additional of 00 after the first 4 numbers. this would indicate that it was made in USA. The chin strap and liner are both complete and fully operable. These helmets were first issued in 1941 to the United States Armed Forces. They were adopted after the Korean War by the Australian Defence Force. In the 1990s they were replaced by the Kevlar based Personnel Armour System-Ground Troop (PASGT) type helmet. However, as evidenced by this helmet, some M1 Steel helmets were not replaced in-service by the PASGT helmet and survived into the early 21st Century. Used by Royal Australian Army in Vietnam in areas where mines were significnat, such as Long Hai's mountains (together with US flak jackets), and also by Royal Australain Navy.An example of an Australian Army issue M1 steel battle helmet complete with fibreglass liner. This helmet type was issued to Australian defence personnel during the Vietnam conflict. The inner line has a transfer on the front " Australian Military Forces" with rising sun badge. The steel outer has an olive green elastic cover (similiar to cargo net) to hold camouflage material. The M1 is two "one-size-fits-all" helmets: an outer shell made of metal and a hard hat-type liner that is nestled inside the shell and contains the suspension system that would be adjusted to fit the wearer's head. Helmet covers and netting would be applied by covering the steel shell with the extra material tucked inside the shell and secured by inserting the liner. The helmet is 7 inches in height, width is 9.5 inches and length is 11 inches. The weight of a World War II era M1 is approximately 2.85 pounds including the liner and chinstrap. (From Wikipepedia) the inner line has a transfer on the front " Australian Military Forces" with rising sun badge.steel helmet

This green bowl shaped steel helmet has a two piece liner and pad attached to the helmet by a single rivet. It has a canvas chin strap attached to the sides and a green cotton mesh attached to the helmet by a drawstring. These helmets were issued to troops during World War 1.A bowl shaped steel helmet with green mesh attached to helmet by drawstring.armed forces, defence forces, world war 1, soldiers

An example of the World War 1 standard USA Army battle helmet issued to infantry troops. This version was known as the M1917 Helmet and is based on the British Brodie helmet with minor modifications. This steel helmet is painted matte khaki, with sawdust added to the exterior finish to provide a non-reflective surface. The brim, which is fitted with an outer steel rim, varies in width from 32 mm at the front to 35 mm at the sides and rear. The helmet inner liner is incomplete. A buff coloured webbing chinstrap, which is attached to the liner frame on each side has an adjustable sliding clip.nilww1, brodie helmet, usa

An example of the standard issue Australian steel battle helmet worn by infantry during WW11, complete with liner and chin strap. The helmet is painted in army green and is stamped with the manufacture date of 1941. The adjustable inner lining is made of leather and rubber. It has a khaki webbing adjustable chin strap.Stamped 1941helmet, australian, 1941, ww2