Sheets of Sri Lanka, 1990
| Issuer | Date | Desc | State | ||
| - | no image | Sri Lanka | 5/2/1990 | empty sheet (#40379) | incomplete |
| - |  |
Sri Lanka | 5/2/1990 | empty sheet (#59451) | incomplete |
| - | no image | Sri Lanka | 9/14/1990 | empty sheet (#40380) | incomplete |
| - |  |
Sri Lanka | 9/14/1990 | empty sheet (#59452) | incomplete |
| - |  |
Sri Lanka | 10/28/1990 | empty sheet (#59453) | incomplete |
| - | no image | Sri Lanka | 11/28/1990 | empty sheet (#40381) | incomplete |