| Issuer: Bulgaria
Date: 1975 (1975 sheets) INCOMPLETE Block 1 (0, 0 x 0) |
External links: Colnect 304625.._Peoples_Union Record of changes |
| Issuer: Bulgaria
Date: 1975 (1975 sheets) INCOMPLETE Block 1 (0, 0 x 0) |
External links: Colnect 304625.._Peoples_Union Record of changes |
