Sheets of Singapore, 2006
| Issuer | Date | Desc | State | ||
| - |  |
Singapore | 2/22/2006 | empty sheet (#22092) | incomplete |
| - |  |
Singapore | 3/22/2006 | Undersea World, sheet of 4 types | |
| - | no image | Singapore | 5/27/2006 | empty sheet (#22094) | incomplete |
| - | no image | Singapore | 7/19/2006 | 100th Anniversary of Singapore Chinese Chamber of Commerce & Industry, sheet of 5 types | incomplete |
| - | no image | Singapore | 8/9/2006 | National Day 2006, empty sheet (#22096) | incomplete |
| - | no image | Singapore | 10/12/2006 | 25th Anniversary of Diplomatic Relations between Singapore and Holy See, sheet of 2 types | |
| - | no image | Singapore | 11/16/2006 | empty sheet (#22098) | incomplete |