| Issuer | Date | Desc | State | ||
| - | no image | Guinea | 4/1/1991 | empty sheet (#29576) | incomplete |
| - | no image | Guinea | 4/1/1991 | empty sheet (#29577) | incomplete |
| - | no image | Guinea | 4/8/1991 | empty sheet (#29578) | incomplete |
| - | no image | Guinea | 10/2/1991 | empty sheet (#29579) | incomplete |
| - | no image | Guinea | 10/2/1991 | empty sheet (#29580) | incomplete |
| - | no image | Guinea | 10/2/1991 | empty sheet (#29581) | incomplete |
| - | no image | Guinea | 12/1/1991 | empty sheet (#29582) | incomplete |
| - | no image | Guinea | 12/1/1991 | empty sheet (#29583) | incomplete |