Issued in 1977, this Austrian commemorative stamp marks the 20th anniversary of the International Atomic Energy Agency (IAEA), headquartered in Vienna. Designed by O. Stefferl, it features the IAEA emblem — an atomic model surrounded by olive branches — symbolizing peaceful nuclear cooperation under United Nations auspices. The elegant blue gradient background and gold inscriptions convey both scientific progress and diplomatic harmony. Denominated at 3 schilling, it highlights Austria’s vital role in fostering global atomic energy safety and development.