A WWII Nazi German NSFK Propaganda enameled tin plate street sign. The round shape sign is enameled with a swastika insignia of the aircraft propeller and the inscription in German, Mitglied der deutschen Luftsport Verbandes, Member of the German Air Sports Association. The sign is covered with enamel in white, red, black, and cobalt blue shades. The German Air Sports Association was an organization set up by the Nazi Party in 1933 to establish a uniform basis for the training of military pilots. Second World War Historical Collectables And Memorabilia. Nazi German Street Signs And Miscellanea.