I think the Norwegian collectors like this helmet the most.
It´s a Norwegian M1931 steel helmet with the VQ monogram.
The helmet was used by the "Förergarden".
And they was Vidkun Quisling-(Norway´s collaborationist leader under German occupation in the second world war)private bodyguard.
His name lives on in many of the world´s languages as a synonym for "traitor".
A very rare helmet,even here in scandinavia.
In nice condition, and Al have a better one in his fantastic collection.