A very nice original membership badge from Nazi Germany, RDK can be translated as organisation of private gardeners or 'German State Association for Gardeners' or 'League of German Allotment Holders'. It is a multiple piece construction with an enamelled badge and riveted aluminium eagle. On the reverse it is maker marked Wilh. Deumer from Ludenscheid.
It is in very good condition, rare, and an interesting piece of history. Postage is included.