1930's German Communist Pin 1931 IAH - Pre WWII

Very scarce 1930's German communist pin. This was given out at the 1931 Soldaritatstag (Translation is obvious) which I assume was a big communist kumbaya fest. Very rare to find pre-war German communist items as these would likely be a death sentence during the Nazi regime. The IAH was Internationale Arbeiter-Hilfe and was, in fact, abolished in 1933. This was in a small grouping recently found and I don't actually recall seeing any others. Neat.