| Issuer: Bulgaria
Date: 10/19/1968 (1968 sheets) INCOMPLETE Block 1 (0, 0 x 0) |
External links: Colnect 407453..hibition_Sofia Record of changes |
| Issuer: Bulgaria
Date: 10/19/1968 (1968 sheets) INCOMPLETE Block 1 (0, 0 x 0) |
External links: Colnect 407453..hibition_Sofia Record of changes |
