| Issuer | Date | Desc | State | ||
| - | no image | GuineaBissau | 2/5/1981 | empty sheet (#65845) | incomplete |
| - | no image | GuineaBissau | 3/11/1981 | empty sheet (#65846) | incomplete |
| - | no image | GuineaBissau | 8/5/1981 | empty sheet (#65847) | incomplete |
| - | no image | GuineaBissau | 8/28/1981 | empty sheet (#65848) | incomplete |
| - | no image | GuineaBissau | 9/22/1981 | empty sheet (#65849) | incomplete |
| - | no image | GuineaBissau | 11/19/1981 | empty sheet (#65850) | incomplete |