Sheets of Japan, 1999
| Issuer | Date | Desc | State | ||
| - |  |
Japan | 4/26/1999 | Prefectural - Hiroshima and Ehime 1999, sheet of 8 types | all added |
| - |  |
Japan | 7/23/1999 | Letter Writing Day 1999 / 50th Anniversary of Japanese Association of Penpal Clubs, empty sheet (#7593) | incomplete |
| - |  |
Japan | 8/23/1999 | Twentieth Century - The 1900s, sheet of 10 types | all added |
| - |  |
Japan | 9/22/1999 | Twentieth Century - The 1910s, sheet of 10 types | all added |
| - |  |
Japan | 10/22/1999 | empty sheet (#7591) | incomplete |
| - |  |
Japan | 12/22/1999 | empty sheet (#7592) | incomplete |