Panagyurishte Treasure July 13, 2012 1966 1999 2010 2012 Bulgaria +3 gold joint issue Kazakhstan maxicard postal stationery postcard registered 1966 1999 2010 2012 Bulgaria gold joint issue Kazakhstan maxicard postal stationery postcard registered
Madara Horseman February 06, 2011 2009 Bulgaria postal stationery +0 unesco 2009 Bulgaria postal stationery unesco
Svetitsata mound February 06, 2011 2005 Bulgaria metal museum + postal stationery 2005 Bulgaria metal museum postal stationery