| Issuer: Bulgaria
Date: 9/20/1967 (1967 sheets) INCOMPLETE Block 1 (0, 0 x 0) |
External links: Colnect 407404.._1968_Grenoble |
| Issuer: Bulgaria
Date: 9/20/1967 (1967 sheets) INCOMPLETE Block 1 (0, 0 x 0) |
External links: Colnect 407404.._1968_Grenoble |
