Anniversaries Stamp Thematic on WOPA+
Anniversaries
| 50th Anniversary of Guayabo National Monument |
| Issued: 12.10.2023 |
| ›Costa Rica |
| Prominent Armenians, 100th Anniversary of Hagop Hagopian |
| Issued: 10.10.2023 |
| ›Armenia |
| The 1400th Anniversary of the Formation of Samo’s Empire |
| Issued: 10.10.2023 |
| ›Slovakia |
| 70 Years of the Daily Paper, Vecernje Novosti |
| Issued: 09.10.2023 |
| ›Serbia |
| Adolfs Alunans |
| Issued: 06.10.2023 |
| ›Latvia |
| Anniversaries - 25 Years of the Correos-FESOFI Educational Programme |
| Issued: 03.10.2023 |
| ›Spain |
| Prominent Armenians, 100th Anniversary of Academician Fadey Sargsyan |
| Issued: 02.10.2023 |
| ›Armenia |
| 74th International Astronautical Congress |
| Issued: 02.10.2023 |
| ›Azerbaijan |
| 1100 Years kingdom of Nájera |
| Issued: 27.09.2023 |
| ›Spain |
| 150 Years of the Croatian National Theater Building in Varazdin |
| Issued: 22.09.2023 |
| ›Croatia |
| 200 Years since the Birth of Sandor Petofi |
| Issued: 22.09.2023 |
| ›Serbia |
| Prominent Armenians, 100th Anniversary of Suren Safaryan |
| Issued: 21.09.2023 |
| ›Armenia |
| 115 Years of Diplomatic Relations between Serbia and Egypt |
| Issued: 19.09.2023 |
| ›Serbia |
| 100th Anniversary of Bambi |
| Issued: 16.09.2023 |
| ›Austria |
| 300th Anniversary Foundation of Fort Manoel 1723-2023 |
| Issued: 16.09.2023 |
| ›Malta |
| 100 Years Royal Automobile Club Vasco Navarro |
| Issued: 14.09.2023 |
| ›Spain |
| 100th Anniversary of Jean-Pierre Kemmer |
| Issued: 12.09.2023 |
| ›Luxembourg |
| 75 Years Since the Foundation of the Chess Federation of Serbia |
| Issued: 12.09.2023 |
| ›Serbia |
| Casa dos Bicos - 500 Years |
| Issued: 07.09.2023 |
| ›Portugal |
| Finnair 100 Years |
| Issued: 06.09.2023 |
| ›Finland |
| 30 Years since the Establishment of PostEurop |
| Issued: 05.09.2023 |
| ›Serbia |
| 925th Birthday of Hildegard of Bingen |
| Issued: 04.09.2023 |
| ›Liechtenstein |