some welded inside the helmet some even fixed to the helmet with rivets. The helmets for the BGS were repainted in dark green RAL 6012. With the progressive depletion of stocks, starting from 1951 new helmets were produced following the construction rules of the M40 model. Regarding the interior, was used the simplified M31 type, with a chinstrap directly fixed to it, (adopted above all by the police forces of the Länder), and a liner with a chinstrap fixed to the helmet according to the methods described above; this version was adopted by the BGS. M40/53 Starting from 1953 a further update of the interior was introduced with the type called I53, developed by the company Schuberth Werke Braunschweig. This interior was no longer fixed with the classic three nails that ran along the helmet shell but by a screw placed inside, in the center of the upper part of the helmet. For this reason the helmet is recognizable from the previous versions by the absence of the rivets on the shell. In later versions, the ventilation holes were also removed. As regards to the fastening of the chinstrap, were used the same solutions of the previous model. Bundeswehr M56 The West German M-56 Stahlhelm was a direct copy of the U.S. M1 helmet. It was properly called "zweiteiliger Stahlhelm" (two-piece steel helmet). In 1958 the helmet was made as a one-piece helmet and renamed Stahlhelm M1A1. The M1A1 came in three sizes: 66, 68, and 71. This helmet was used until 1981 when a modified version was released and renamed the Helm1A1. Modifications included a 3-point chin strap with the third point connecting at the nape, extra-large sizes, and a further adjustable liner. The M1A1 Stahlhelm remained in service until 1992 when the Bundeswehr replaced it with a PASGT-derived kevlar helmet called the Gefechtshelm ("Combat helmet"). Decals and insignia After Stahlhelm shells were painted, the colours of which varied by organization, small identification or insignia decals usually were affixed to one or both sides of the helmet. Almost every military, naval, and political organization had its own distinctive insignia, which was applied as decals to the sides of helmets. The right side of early M35 helmets bore the tricolored shield of black, white, and red stripes, the traditional national colors of the pre-WWI German Empire (cf. the black, red, and gold of today's Federal Republic of Germany, harking back