Bulgaria
4 different Perforations
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Definitives: National Economy |
| Nominal: | 9 лв |
| Year: | 1950 |
| Size: | 36 x 26 mm |
| Perforation: | Various |
| Mintage: | 1,000,000 |
Definitives: National Economy
 Machinery Pool |  Central Heating Plant 0.1$ |  Textile worker 0.08$ |  Female Textile Worker 0.44$ |
 Locomotive 0.13$ |  Miner 0.09$ |  Tractor 0.13$ |  Shipbuilding |
 Tractor 0.14$ |  Tractor Station 0.1$ |  Miner 0.1$ |  Locomotive |