Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Congress of the Communist Party |
| Nominal: | 16 ст |
| Year: | 1958 |
| Perforation: | line 11 |
| Mintage: | 150,000 |
Congress of the Communist Party
 Marx and Lenin |  Inscription, Demonstrators with Banners |  Inscription, Blast Furnaces of the "Lenin steelworks" |