Pyramids of Giza September 29, 2017 1972 2005 2007 airmail censor Egypt joint issue Nepal ofdc unesco United Nations +
Machu Picchu April 03, 2016 1986 2011 2014 Brazil cancel joint issue mini sheet ofdc Peru postcrossing registered unesco +
Mohenjo-daro January 21, 2016 1973 1976 2002 2014 aerogramme Japan joint issue ofdc Pakistan unesco +
Heidentor Carnuntum October 26, 2015 2009 2015 Austria joint issue mini sheet postal stationery selvage Slovakia +
Cucuteni-Trypillian Culture January 28, 2013 2014 2015 2018 ceramic europa joint issue maxicard metal Moldova museum Neolithic postal stationery postcard postcrossing Romania selvage Ukraine +
Hadrian's Wall October 01, 2012 1986 1993 2005 2009 aerogramme Australia booklet bronze Great Britain Italy joint issue maxicard PHQ postcrossing unesco +
Panagyurishte Treasure July 13, 2012 1966 1999 2010 2012 Bulgaria gold joint issue Kazakhstan maxicard postal stationery postcard registered +