| Issuer | Date | Desc | State | ||
| - | no image | Nicaragua | 5/15/1981 | empty sheet (#85976) | incomplete |
| - | no image | Nicaragua | 5/18/1981 | empty sheet (#85977) | incomplete |
| - | no image | Nicaragua | 6/25/1981 | empty sheet (#85978) | incomplete |
| - | no image | Nicaragua | 11/2/1981 | empty sheet (#85979) | incomplete |
| - | no image | Nicaragua | 11/2/1981 | empty sheet (#85980) | incomplete |