| Issuer: Bulgaria
Date: 10/16/1987 (1987 sheets) INCOMPLETE Block 1 (0, 0 x 0) |
External links: Colnect 437553..Space_Research |
| Issuer: Bulgaria
Date: 10/16/1987 (1987 sheets) INCOMPLETE Block 1 (0, 0 x 0) |
External links: Colnect 437553..Space_Research |
