Sheets of Angola, 1991
| Issuer | Date | Desc | State | ||
| - | no image | Angola | 2/28/1991 | empty sheet (#21183) | incomplete |
| - |  |
Angola | 4/5/1991 | sheet of 4 types | incomplete |
| - |  |
Angola | 6/25/1991 | African Year of Tourism, sheet of 1 type |
| Issuer | Date | Desc | State | ||
| - | no image | Angola | 2/28/1991 | empty sheet (#21183) | incomplete |
| - | |
Angola | 4/5/1991 | sheet of 4 types | incomplete |
| - | |
Angola | 6/25/1991 | African Year of Tourism, sheet of 1 type |