| Issuer | Date | Desc | State | ||
| - | no image | Estonia | 4/13/2021 | 100th Anniversary of the Järvselja, sheet of 1 type | |
| - | no image | Estonia | 4/29/2021 | 100th Anniversary of the Estonian Ornithological Society, sheet of 2 types | incomplete |
| - | no image | Estonia | 12/29/2021 | Summer Olympics Winner - The Estonian Women's Epee Team, sheet of 1 type |