Болгария
Stamp from block
| Страна: | Болгария |
| Тип: | Почтовые марки |
| Серия: | Conf. on Security and Cooperation in Europe |
| Номинал: | 50 ст |
| Год: | 1986 |
| Перфорация: | comb 12¾ x 13 |
Conf. on Security and Cooperation in Europe
 Conference Building, Helsinki |  Map of Europe |  Austria Center Vienna 210 руб |  Hofburg Vienna |
 Town Hall, Vienna |  UN Building in the Danube Park, Vienna |