| Issuer: Bulgaria
Date: 9/27/1973 (1973 sheets) INCOMPLETE Block 1 (0, 0 x 0) |
External links: Colnect 410767.._Boyana_Church |
| Issuer: Bulgaria
Date: 9/27/1973 (1973 sheets) INCOMPLETE Block 1 (0, 0 x 0) |
External links: Colnect 410767.._Boyana_Church |
