M40 History.
The M1940 helmet first appeared in March 1940 following a redesign of the manufacturing process which now incorporated more automated stamping techniques. The first helmets issued received only one decal on the left side of the helmet. In 1943 this factory applied decal was discontinued in order to comply with orders issued by the Supreme Commander of the Wehrmacht. Helmets of this type were characteristic of having rolled edges and stamped air vents that were embossed directly into the steel shell. Paint configurations ranged from medium to very dark (almost black-green in color) with various degrees of texture. Some helmets also exhibited a "slate grey" color that was either field or factory applied. The interior of the helmet remained smooth painted unless it was factory or field modified and then re-issued. Many M1940 helmets appear heavier in weight when compared to M1935 or M1942 helmets. This is specifically true of helmets that were manufactured by the Quist firm. These helmet shells are generally well formed and heavy compared to other German helmets of the era. Most M1940 helmets received the second pattern zinc liner band system. However, those introduced in 1940 and early 1941 often have the first model aluminum liner bands. These are appropriately date marked between 1940 and 1943.
