Bulgaria
Perforation only Vertical
Stamp from block
Stamp from block
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Conf. of the signing of the Helsinki Final Act |
| Nominal: | 50 ст |
| Year: | 1985 |
| Perforation: | frame 13 |
| Mintage: | 32,000 |
Conf. of the signing of the Helsinki Final Act
 Flags of the participating Countries |  Map of Europe, Peace Dove |  Flags of the participating Countries |