Sheets of Singapore, 1988
| Issuer | Date | Desc | State | ||
| - |  |
Singapore | 5/4/1988 | 25th Anniversary of Public Utilities Board, sheet of 3 types | all added |
| Issuer | Date | Desc | State | ||
| - | |
Singapore | 5/4/1988 | 25th Anniversary of Public Utilities Board, sheet of 3 types | all added |