| Name | Participants | Dates | Stamps | ||
| 180th Anniversary of Birth of Davorin Jenko | 2 | (with Serbia) | 2015 | 2 | |
| 300th anniversary of the birth of Maria Theresa | 5 | (with Austria - Ukraine) | 2017 | 5 | |
| Centenary of the Russian Chapel below Vršič | 2 | (with Russia) | 2016 | 2 | |
| Joint issue India-Slovenia | 2 | (with India) | 2014 | 3 | |
| Kažun & Hiška | 2 | (with Croatia) | 2009 | 4 |