Sheets of Portugal - Azores region, 1990
| Issuer | Date | Desc | State | ||
| - |  |
Azores region | 2/14/1990 | sheet of 4 types | all added |
| - |  |
Azores region | 4/11/1990 | sheet of 4, 2 types | all added |
| - |  |
Azores region | 7/11/1990 | empty sheet (#24643) | incomplete |
| Issuer | Date | Desc | State | ||
| - | |
Azores region | 2/14/1990 | sheet of 4 types | all added |
| - | |
Azores region | 4/11/1990 | sheet of 4, 2 types | all added |
| - | |
Azores region | 7/11/1990 | empty sheet (#24643) | incomplete |