Sheets of Great Britain - Isle of Man, 1999
| Issuer | Date | Desc | State | ||
| - |  |
Isle of Man | 3/4/1999 | 175th Anniversary of the Royal National Lifeboat Institution, sheet of 1 type | |
| - |  |
Isle of Man | 6/2/1999 | empty sheet (#61017) | incomplete |
| - |  |
Isle of Man | 10/12/1999 | Bee Gees, sheet of 1 type | |
| - |  |
Isle of Man | 10/12/1999 | Bee Gees, sheet of 1 type | |
| - |  |
Isle of Man | 12/31/1999 | empty sheet (#61020) | incomplete |