Issued by Deutsche Bundespost Berlin in 1956, this 20 Pfennig commemorative stamp marks the 78. Deutscher Katholikentag (German Catholic Congress). The design shows a stylized Christ figure with outstretched arms before atomic orbits, symbolizing faith’s place in the modern scientific age. The event, held in Cologne, emphasized peace and moral responsibility amid postwar nuclear tension. Printed in magenta and black, it reflects Berlin’s thoughtful postwar thematic issues combining spirituality and modernity.