Sheets of Tonga - Niuafo'ou, 2001
| Issuer | Date | Desc | State | ||
| - | no image | Niuafo'ou | 2/1/2001 | empty sheet (#60438) | incomplete |
| - | no image | Niuafo'ou | 6/5/2001 | empty sheet (#60439) | incomplete |
| - | no image | Niuafo'ou | 9/19/2001 | empty sheet (#60440) | incomplete |
| - |  |
Niuafo'ou | 11/21/2001 | empty sheet (#60441) | incomplete |