Issued by Austria in 1977, this 3-schilling commemorative stamp marks the 20th anniversary of the International Atomic Energy Agency (IAEA), headquartered in Vienna. The design by O. Stefferl features the IAEA emblem—an atomic structure surrounded by olive branches—symbolizing the peaceful use of atomic energy under UN guidance. The gold lettering “20 Jahre IAEA” highlights the agency’s mission to promote safe and beneficial nuclear technology worldwide. A clean and modern blue gradient background reinforces the theme of science and diplomacy.