Sheets of Tonga - Niuafo'ou, 1990
| Issuer | Date | Desc | State | ||
| - |  |
Niuafo'ou | 4/4/1990 | empty sheet (#60414) | incomplete |
| - | no image | Niuafo'ou | 6/6/1990 | empty sheet (#60415) | incomplete |
| Issuer | Date | Desc | State | ||
| - | |
Niuafo'ou | 4/4/1990 | empty sheet (#60414) | incomplete |
| - | no image | Niuafo'ou | 6/6/1990 | empty sheet (#60415) | incomplete |