Octagonal stamps
"NOTICE: this list is no longer updated, as this type of stamp is no longer considered to be unusual due to the number issued."
1854 - India 1898 - Tessaglia (Turchia) / Turkey 1991 - Oman 03-01-2002 - Canada 2002 - Marocco / Morocco 2003 - Corea del Sud / South Korea
2004 - Slovenia 21-05-2004 - Qatar 2004 - Corea del Sud / South Korea
2006 - Marocco / Morocco 2007 - Lussemburgo / Luxemburg 2009 - Corea del Sud / South Korea 23-08-2010 - Corea del Nord / North Korea 03-11-2010 - Papua Nuova Guinea / Papua New Guinea 04-11-2010 - Emirati Arabi Uniti / United Arab Emirates 30-06-2011 - Mozambico / Mozambique
07-07-2011 - Mozambico / Mozambique 30-08-2011 - Mozambico / Mozambique 14-06-2012 - Bangladesh 16-08-2012 - Turchia / Turkey 22-11-2012 - Marocco / Morocco 14-01-2013 - Turchia / Turkey 08-03-2014 - Siria / Syria 14-03-2014 - Namibia 17-04-2014 - Siria / Syria 10-09-2014: Niger 13-04-2015: Malaysia 06-11-2015: Finlandia / Finland 09-12-2015: Pitcairn Is. 2016: Sierra Leone 10-01-2017: Malaysia 23-04-2018 - Giappone / Japan 11-06-2018: Francia / France - "Inverted Head"
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
"NOTICE: this list is no longer updated, as this type of stamp is no longer considered to be unusual due to the number issued."