Georg Jensen Dark square brooch from 1944-1950

Georg Jensen dark square brooch in iron and a little silver. During and after World War II there were not enough silver, so Georg Jensen made jewellery in iron and silver. These were made between 1944 and 1950. Hallmarked "GEORG JENSEN 5001C". Designed by Arno Malinowski. Measures 4.1 cm. by 4.1 cm. The iron part has some shades (see pictures please) otherwise excellent condition.