Sheets of Portugal - Madeira region, 1991
| Issuer | Date | Desc | State | ||
| - |  |
Madeira region | 1/31/1991 | empty sheet (#22406) | incomplete |
| - |  |
Madeira region | 4/11/1991 | Europa 1991, sheet of 4, 2 types | |
| - |  |
Madeira region | 6/7/1991 | Fruits and Plants of Subtropic region, sheet of 4 types |