Pyramids of Giza September 29, 2017 1972 2005 2007 airmail censor Egypt joint issue Nepal ofdc unesco United Nations +
Archaeological Discoveries February 06, 2011 1972 1973 1974 1975 antler bronze Bronze Age ceramic gold ofdc semi postal slogan cancel Switzerland +
King Tut November 14, 2010 1972 1992 1993 2002 cachet cancel Egypt gold Great Britain museum postcard wood +