| Issuer | Date | Desc | State | ||
| - | no image | Chad | 1970 | empty sheet (#51228) | incomplete |
| - | no image | Chad | 1970 | empty sheet (#51230) | incomplete |
| - | no image | Chad | 1970 | empty sheet (#51231) | incomplete |
| - | no image | Chad | 1970 | empty sheet (#51232) | incomplete |
| - | no image | Chad | 7/1/1970 | empty sheet (#51229) | incomplete |
| - | |
Chad | 9/1/1970 | empty sheet (#21455) | incomplete |
| - | |
Chad | 11/1/1970 | empty sheet (#21456) | incomplete |