This is a Dänish Labourfront memberpass from 1943 (Det danske Arbejdsfællesskab). It was after the occupation of Denmark by Germany, during the war under the umbrella of the German labourfront (Das Deutsche Arbeitsfront). This can also be seen by the cogwheel-like logo with DA in the centre, quite resembling that of the German Labourfront. The Dänish DA was only very small.
With 12 contributionstamps per annual for the years 1943 and 1944.
On name of Karl Mundfeld.
Very very rare! Im not aware of another!!!