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)