Болгария
| Страна: | Болгария |
| Тип: | Почтовые марки |
| Серия: | Founding of the Social Democratic Youth Association |
| Номинал: | 80 ст |
| Год: | 1952 |
| Перфорация: | line 10¾ x 11½ |
| Тираж: | 100,000 |
Founding of the Social Democratic Youth Association
 1st Congress of the Association in 1912 |  Revolutionists Fight Scene |  Map of Bulgaria, Industrial Plant and Border Patrol |  G. Dimitrov among the Youth |