| Issuer | Date | Desc | State | ||
| - | no image | Bhutan | 5/5/1986 | empty sheet (#50705) | incomplete |
| - | no image | Bhutan | 5/5/1986 | empty sheet (#50706) | incomplete |
| - | no image | Bhutan | 6/16/1986 | empty sheet (#50707) | incomplete |
| - | no image | Bhutan | 6/16/1986 | empty sheet (#50708) | incomplete |
| - | no image | Bhutan | 7/23/1986 | empty sheet (#50709) | incomplete |
| - | no image | Bhutan | 11/4/1986 | empty sheet (#50710) | incomplete |
| - | no image | Bhutan | 11/4/1986 | empty sheet (#50711) | incomplete |
| - | no image | Bhutan | 11/4/1986 | empty sheet (#50712) | incomplete |
| - | no image | Bhutan | 11/4/1986 | empty sheet (#50713) | incomplete |