Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Five-Year Plan of the Economy |
| Nominal: | 4 лв |
| Year: | 1949 |
| Perforation: | Various |
| Mintage: | 110,000 |
Five-Year Plan of the Economy
 Hydropower Plant, Rila Mountain |  Cement Factory "Giant", Dimitrovgrad |  Farm Machinery Factory |  Tractor |
 Industry and Agriculture (symbolic) 1.3$ |