Issued in 1962, this striking four-value set from the Republic of Indonesia promotes the World Health Organization’s global anti-malaria campaign. Each stamp features the WHO emblem — the Rod of Asclepius superimposed on a world map with a stylized mosquito below — symbolizing medical science combating disease worldwide. The inscriptions appear in both English and French, emphasizing the international unity of the effort. Vibrant colors (blue, green, orange-brown, and magenta) highlight denominations from 40 sen to Rp 6, making this an essential thematic addition for collectors of health, WHO, or United Nations-related issues.