1974 UPU Centenary
1974 ILO Headquarters
1973 United Nations Volunteer Program
1973 Drug Abuse
1973 Namibia
1972 Art-Sert Ceiling
1973 Disarmament Decade
1971 Eliminate Racial Discrimination
1972 Environment
1974 Art
1972 Economic Comm. Europe
1971 Universal Postal Union Headquarters
1971 World Food Program
1974 World Population
1972 World Health Day
1974 Law of the Sea
1971 Peaceful uses of the Sea Bed
1972 Non-Proliferation
1971 International School
1972 Definitive
400 postally used US stamps, including airmails!
Less than 60¢ per cover.
Neat variety of cork fancy cancels on early US issues.
Human Rights Day in 1973 marked the 25th anniversary of the adoption of the Universal Declaration of Human Rights. This is tenth commemorative stamp set in the Human Rights Series.