Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Monumental buildings of Sofia |
| Nominal: | 80 ст |
| Year: | 1977 |
| Size: | 36 x 26 mm |
| Perforation: | comb 13 |
Monumental buildings of Sofia
 Ivan Vazov National Theatre 0.13$ |  Party Headquarters, Sofia 0.1$ |  House of the People's Army 0.1$ |  Clement of Ohrid University 0.26$ |
 National Art Gallery |  National Assembly Building 0.46$ |