Irregular shapes: from 1976 to 2000
[fino al 1975]  [dal 2001 al 2005]  [dal 2006 al 2009][dal 2010 al 2013]  [dal 2014 al 2018]  [dal 2019]
1976 - Tonga (adesivi / self-adhesive)   
1977 - Tonga (adesivi / self-adhesive)  
1978 - Tonga (adesivi / self-adhesive)  
1978 - Norfolk Is. (adesivi / self-adhesive)  
1979 - Tonga (adesivi / self-adhesive)   
1980 - Tonga (adesivi / self-adhesive)  
1994 - Canada
1994 - Norfolk Is. (adesivi / self-adhesive)
1995 - Canada
1996 - Canada
1997 - Vanuatu
1998 - Giappone / Japan
1999 - Stati Uniti / United States
1999 - Giappone / Japan
1999 - Giappone / Japan
2000 - Tonga
2000 - Giappone / Japan da foglietti / from sheets:  
2000 - Trinidad & Tobago  
15-09-2000 - Svizzera/ Switzerland (booklet)