Millennium Series December 05, 2011 1999 Bronze Age ceramic gold +1 Korea South mini sheet Neolithic shell silver 1999 Bronze Age ceramic gold Korea South mini sheet Neolithic shell silver
National Treasure April 24, 2011 1968 2009 joint issue Korea South +0 metal 1968 2009 joint issue Korea South metal
Gochang April 05, 2011 2003 Korea South megalith mini sheet PHQ postcard + unesco 2003 Korea South megalith mini sheet PHQ postcard unesco