Sheets of Palau, 1991 incomplete
| Issuer | Date | Desc | State | ||
| - | no image | Palau | 4/28/1991 | 100th Anniversary of Christianity in Palau Islands, empty sheet (#35930) | incomplete |
| - |  |
Palau | 5/24/1991 | empty sheet (#13229) | incomplete |
| - | no image | Palau | 7/2/1991 | empty sheet (#35931) | incomplete |
| - | no image | Palau | 7/2/1991 | empty sheet (#35932) | incomplete |
| - | no image | Palau | 11/19/1991 | PHILANIPPON '91, empty sheet (#35937) | incomplete |