| Issuer | Date | Desc | State | ||
| - | no image | Mauritania | 2000 | empty sheet (#23484) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23485) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23486) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23487) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23488) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23489) | incomplete |
| - | no image | Mauritania | 11/5/2000 | empty sheet (#23478) | incomplete |
| - | no image | Mauritania | 11/5/2000 | empty sheet (#23479) | incomplete |
| - | no image | Mauritania | 11/5/2000 | empty sheet (#23480) | incomplete |
| - | no image | Mauritania | 11/5/2000 | empty sheet (#23481) | incomplete |
| - | no image | Mauritania | 11/5/2000 | Butterflies 2000, sheet of 3 types | incomplete |
| - | no image | Mauritania | 11/5/2000 | Birds 2000, sheet of 3 types | incomplete |