Issued by the United Nations Postal Administration in 1982, this 40-cent stamp commemorates the 10th anniversary of the 1972 United Nations Conference on the Human Environment held in Stockholm—the first major global effort to address environmental protection. The design features a circular emblem divided into four quadrants representing the sun, water, vegetation, and soil, symbolizing the interconnected elements of Earth’s ecosystem. Surrounded by the UN olive branches, the emblem underscores global cooperation in environmental stewardship. This issue marks a significant milestone in the early history of international environmental awareness.