Cap stahlhelm?

[Dmv]

Got this cap which is probably Stahlhelmbund.
It has dark green piping and looks like some summer variation.
Any idea if it's missing any insignia (to the top?)?

[Sergeant 08]

Cap looks like a cap from the Weimar period. The cockade is bigger than Imperial / Weimar cockades, like a Wehrmacht cap cockade. Perhaps added later?

[wilhelm Saris]

The shown cap has nothing to do with the Stahlhelm-organization. They had no summer issue headgear. Such type of cap or summer issue are not mentioned in any Stahlhelm uniform-regulation from 1925 through 1935.
Maybe it is related to a voluntary labor-organization, but the type is not familiar too me, so I guess it might be from one of the many political organizations during that period! Much is unknown about uniforms of most of those organizations.

[Sergeant 08]

The material of the cap has nothing to do with "summer caps". It was typical for caps of many organizations during that period.