| Name | Issues/Designs | |||
| 23rd beekeepers congress | 1971 | — | - ... | |
| 19th Conference of Communist Party of USSR | 1988 | — | - ... | |
| 14th Congress of International Union of Architects | 1981 | — | - ... | |
| 10th European Congress of Rheumatologists | 1983 | — | - ... | |
| 27th International Geological Congress | 1984 | — | - ... | |
| International Women's Congress 1963 | 1963 | — | - International Women's Congress |