| Name | Issues/Designs | |||
| APIMONDIA '91 | 1991 | — | - ... | |
| 13th APISLAVIA Congress | 2000 | — | - ... | |
| AVNOJ Meeting | 1942 | — | - 40th Anniversary of the ... | |
| 12th Congress of the League of Communists of Yugoslavia | 1982 | — | - ... | |
| Esperanto Congress 1953 | 1953 | — | - ... | |
| European Security and Cooperation Conference | 1975 | — | - ... | |
| European Security Meeting | 1980 | — | - ... | |
| 5th nonaligned conference | 1976 | — | - ... | |
| United Nations Conference on Trade and Development | 1983 | — | - ... | |
| 2nd World Congress of Deaf Mutes | 1955 | — | - ... |