This commemorative stamp was issued by the United Nations in 1990 to raise awareness of the worldwide fight against AIDS (SIDA in French). The design features Leonardo da Vinci’s Vitruvian Man in silver, symbolizing humanity, set against a vibrant multicolored background that represents diversity and the global impact of the epidemic. To the right, the emblem of the World Health Organization (WHO) reinforces the health-focused mission of the issue. With a face value of 0.80 Swiss francs, this stamp highlights the UN’s commitment to international health campaigns and humanitarian awareness at the height of the global AIDS crisis. A significant issue for collectors of UN, health, and humanitarian themes.