Boxed Steel Helmet Association Membership Badge 1920. Large Size.

Alpaca based and in a very good, unworn condition with all of the silver plate still present, the enamel without damage.
Large size (35 mm). Engraved on the reverse with „VI. No. 325 1920“, an „A“ for Alpacka and marked with „STh“ for the maker Stahlhof Magdeburg and the German patent mark „GES.GESCH.“.
The fitting blue box in a very good, barely used condition.
Very difficult to find large size early membership badge.