Avebury April 09, 2017 2017 Great Britain megalith Neolithic ofdc PHQ postcrossing + unesco 2017 Great Britain megalith Neolithic ofdc PHQ postcrossing unesco
Skara Brae April 09, 2017 2011 2017 Great Britain Neolithic ofdc PHQ unesco + UniversalMail 2011 2017 Great Britain Neolithic ofdc PHQ unesco UniversalMail
Hadrian's Wall October 01, 2012 1986 1993 2005 2009 aerogramme +6 Australia booklet bronze Great Britain Italy joint issue maxicard PHQ postcrossing unesco 1986 1993 2005 2009 aerogramme Australia booklet bronze Great Britain Italy joint issue maxicard PHQ postcrossing unesco
Gochang April 05, 2011 2003 Korea South megalith mini sheet PHQ postcard + unesco 2003 Korea South megalith mini sheet PHQ postcard unesco
Legananny Dolmen February 02, 2011 1984 Great Britain megalith Neolithic +0 PHQ 1984 Great Britain megalith Neolithic PHQ
Society of Guernsey November 14, 2010 1982 Benham ceramic europa fdc Guernsey PHQ + silk 1982 Benham ceramic europa fdc Guernsey PHQ silk