Sheets of Singapore, 1999
| Issuer | Date | Desc | State | ||
| - |  |
Singapore | 3/19/1999 | empty sheet (#22019) | incomplete |
| - |  |
Singapore | 4/27/1999 | IBRA '99, sheet of 1 type | incomplete |
| - |  |
Singapore | 7/1/1999 | empty sheet (#22021) | incomplete |
| - |  |
Singapore | 7/2/1999 | empty sheet (#22022) | incomplete |
| - | no image | Singapore | 8/12/1999 | Joint Issue with Sweden, sheet of 4 types | all added |
| - | no image | Singapore | 8/21/1999 | CHINA '99, sheet of 1 type | incomplete |
| - | no image | Singapore | 9/9/1999 | 40th Anniversary of First President of Singapore Yusof bin Ishak, sheet of 4, 1 type | all added |
| - |  |
Singapore | 12/31/1999 | empty sheet (#22026) | incomplete |