| Issuer | Date | Desc | State | ||
| - | no image | Niger | 4/17/1980 | empty sheet (#35660) | incomplete |
| - | no image | Niger | 4/25/1980 | empty sheet (#35661) | incomplete |
| - | no image | Niger | 7/22/1980 | empty sheet (#35662) | incomplete |
| - | no image | Niger | 9/27/1980 | empty sheet (#35663) | incomplete |
| - | no image | Niger | 10/15/1980 | empty sheet (#35664) | incomplete |