Knowledge & Education Stamp Thematics on WOPA+
Books
| Comic Book |
| Issued: 10.12.2021 |
| ›Bosnia and Herzegovina - Republic of Srpska |
| Book of the Xacobeo |
| Issued: 28.10.2021 |
| ›Spain |
| Literature |
| Issued: 20.10.2021 |
| ›Bosnia and Herzegovina - Republic of Srpska |
| The Ghost of Roses |
| Issued: 01.10.2021 |
| ›Latvia |
| Franking Labels 2021 |
| Issued: 20.09.2021 |
| ›Faroe Islands |
| DC Collection |
| Issued: 17.09.2021 |
| ›Great Britain |
Education
| Riga State Gymnasium No.1 |
| Issued: 27.08.2021 |
| ›Latvia |
| Sustainability |
| Issued: 29.04.2021 |
| ›Switzerland |
| (Vienna) United Against Racism and Discrimination |
| Issued: 19.03.2021 |
| ›United Nations |
| (3 Offices) United Against Racism and Discrimination |
| Issued: 19.03.2021 |
| ›United Nations |
| (New York) United Against Racism and Discrimination |
| Issued: 19.03.2021 |
| ›United Nations |