Sheets of Philippines, 1991
| Issuer | Date | Desc | State | ||
| - |  |
Philippines | 8/29/1991 | empty sheet (#23161) | incomplete |
| - |  |
Philippines | 10/15/1991 | empty sheet (#23162) | incomplete |
| - |  |
Philippines | 11/22/1991 | empty sheet (#60036) | incomplete |
| - |  |
Philippines | 11/22/1991 | empty sheet (#60037) | incomplete |
| - |  |
Philippines | 11/27/1991 | empty sheet (#23163) | incomplete |
| - |  |
Philippines | 12/19/1991 | empty sheet (#23164) | incomplete |
| - |  |
Philippines | 12/19/1991 | empty sheet (#23165) | incomplete |
| - |  |
Philippines | 12/19/1991 | empty sheet (#60038) | incomplete |