This Indonesian stamp, issued in 1962, is part of the global campaign series “The World United Against Malaria.” It features the emblem of the World Health Organization, with a globe, staff of Asclepius, and a mosquito – symbolizing the international fight against malaria. The inscriptions appear in both Indonesian (“Dunia Bersatu Melawan Malaria”) and English, emphasizing worldwide cooperation. Printed in striking blue and white, this 40 sen denomination highlights Indonesia’s participation in one of the most important health initiatives of the 20th century. A meaningful thematic issue, it is highly valued by collectors of medical, WHO, and global health stamps.