| Name | Participants | Dates | Stamps | ||
| 130th Anniversary of the..h of Raúl Maria Pereira | 2 | (with Peru) | 2007 | 2 | |
| 40th Anniversary of Dipl..Relations China-Portugal | 2 | (with China, PRC) | 2019 | 4 | |
| 70th anniversary of dipl..ons Portugal-Philippines | 2 | (with Philippines) | 2016 | 4 | |
| Celebration of Mexico-Portugal Relations | 2 | (with Mexico) | 2014 | 4 | |
| Ceramics - joint issue Portugal-Romania | 2 | (with Romania) | 2010 | 4 | (incomplete) |
| Columbus discovery 500th | 4 | (with Italy - United States) | 1992 | 45 | (incomplete) |
| Europa 1960 | 18 | (with Belgium - Turkey) | 1960 | 34 | (incomplete) |
| Europa 1962 | 16 | (with Belgium - Turkey) | 1962 - 1963 | 34 | (incomplete) |
| Europa 1963 | 18 | (with Belgium - Turkey) | 1963 | 35 | (incomplete) |
| Europa 1964 | 19 | (with Austria - Turkey) | 1964 | 36 | (incomplete) |
| Europa 1965 | 19 | (with Belgium - Turkey) | 1965 | 36 | (incomplete) |
| Europa 1966 | 18 | (with Andorra (Fr) - Turkey) | 1966 | 35 | (incomplete) |
| Europa 1967 | 19 | (with Andorra (Fr) - Turkey) | 1967 | 39 | (incomplete) |
| Europa 1968 | 17 | (with Andorra (Fr) - Turkey) | 1968 | 34 | (incomplete) |
| Europa 1969 | 25 | (with Andorra (Fr) - Yugoslavia) | 1969 | 50 | (incomplete) |
| Europa 1970 | 18 | (with Andorra (Fr) - Yugoslavia) | 1970 | 39 | (incomplete) |
| Europa 1971 | 15 | (with Belgium - Yugoslavia) | 1971 | 31 | (incomplete) |
| Europa 1972 | 22 | (with Andorra (Fr) - Yugoslavia) | 1972 | 46 | (incomplete) |
| Europa 1973 | 13 | (with Andorra (Sp) - Switzerland) | 1973 | 27 | (incomplete) |
| Fishing Villages - joint issue Hong Kong-Portugal | 2 | (with Hong Kong) | 2005 | 8 | |
| Iberian Bridges | 2 | (with Spain) | 2006 | 4 | |
| Joint issue China, PRC-Portugal | 2 | (with China, PRC) | 2001 | 4 | (incomplete) |
| Joint issue France-Portugal | 2 | (with France) | 2016 | 4 | |
| Joint issue India-Portugal | 2 | (with India) | 2017 | 4 | |
| Joint Issue Iran-Portugal | 2 | (with Iran) | 2009 | 4 | |
| Joint Issue Portugal-Brazil | 2 | (with Brazil) | 2012 | 6 | |
| Joint issue Portugal-Morocco | 1 | 2014 | 1 | (incomplete) | |
| Joint Issue Portugal-Turkey | 2 | (with Turkey) | 2009 | 4 | |
| Joint issue Portugal-Vietnam | 2 | (with Vietnam) | 2016 | 4 | |
| Pombal | 4 | (with Azores - Madeira) | 1925 | 18 | (incomplete) |
| Portugal-Korea relations 50th | 2 | (with Korea) | 2011 | 4 | |
| Vasco da Gama 400th | 7 | (with Azores - Timor) | 1898 | 56 |