Hello Friends!
I am not a great RAD collector, but I have this helmet!
This helmet is a "ReichsArbeitsDienst Stahlhelm", the RAD insignia is made by "Methner und Bürger".
We see exactly the same insignia in the book "The-Helmet-Decals-of-the-Third-Reich" by Ken-Niewiarowicz page 253.
The helmet is not complet but I really love it!
For me this helmet is more rare than a WSS helmet…

By this post I would like to say a big Thank you to mister Saris and mister Lehrman for the help about this helmet!
RZM