| Issuer | Date | Desc | State | ||
| - | no image | Liberia | 3/23/1967 | empty sheet (#34201) | incomplete |
| - | no image | Liberia | 6/20/1967 | empty sheet (#34202) | incomplete |
| - | no image | Liberia | 11/20/1967 | empty sheet (#34203) | incomplete |
| - | no image | Liberia | 12/22/1967 | empty sheet (#34204) | incomplete |