Hadrian's Wall October 01, 2012 1986 1993 2005 2009 aerogramme Australia booklet bronze Great Britain Italy joint issue maxicard PHQ postcrossing unesco +
Chersonesus June 13, 2012 2005 2013 2015 mini sheet postal stationery postcard postcrossing Russia Ukraine unesco +
Borobudur Temple March 25, 2012 1961 1971 2014 2015 cachet Indonesia maxicard mini sheet Netherlands ofdc postcrossing unesco United Nations +