6th PanAfrican Prehistory Congress September 10, 2018 1967 cachet Central African Republic lithic megalith + ofdc 1967 cachet Central African Republic lithic megalith ofdc
International Tourist Year September 29, 2017 1967 Ethiopia ofdc +0 rock art 1967 Ethiopia ofdc rock art
Arles January 30, 2017 1967 France postcard slogan cancel + unesco 1967 France postcard slogan cancel unesco
Nubian Monument Campaign September 30, 2013 1964 1965 1967 1980 Egypt Gabon Maldives ofdc unesco + Uruguay 1964 1965 1967 1980 Egypt Gabon Maldives ofdc unesco Uruguay
Rock Art June 13, 2012 1967 1984 cachet rock art Spain unesco + United Nations 1967 1984 cachet rock art Spain unesco United Nations
Skogerveien November 03, 2011 1963 1967 1968 1970 cachet Norway ofdc + rock art 1963 1967 1968 1970 cachet Norway ofdc rock art
Tassili N'ajjer National Park March 24, 2011 1967 1981 1983 Algeria ofdc rock art + unesco 1967 1981 1983 Algeria ofdc rock art unesco