Anniversaries Stamp Thematic on WOPA+
Anniversaries
| Cacheted First-Day Cover Centennial |
| Issued: 10.08.2023 |
| ›Marshall Islands |
| 100 Years of the PTT Museum |
| Issued: 31.07.2023 |
| ›Serbia |
| Maria Callas's 100th Anniversary |
| Issued: 24.07.2023 |
| ›Portugal |
| Prominent Armenians - 100th Anniversary of Lyudvik Mirzoyan |
| Issued: 24.07.2023 |
| ›Armenia |
| Prominent Armenians, 100th Anniversary of Sargis Baghdasaryan |
| Issued: 19.07.2023 |
| ›Armenia |
| 150th Anniversary of Valery Bryusov |
| Issued: 18.07.2023 |
| ›Armenia |
| Prominent Armenians, 100th Anniversary of Khachatur Iskandaryan |
| Issued: 17.07.2023 |
| ›Armenia |
| Sport - The 150th Anniversary of Organised Hiking Trips in Slovakia |
| Issued: 14.07.2023 |
| ›Slovakia |
| 250 Years since the Slovak Settlement in Kisac |
| Issued: 14.07.2023 |
| ›Serbia |
| Events - 50th Anniversary of the Founding of the Team Nucleares S.A |
| Issued: 12.07.2023 |
| ›Spain |
| Qeqertarsuaq's 250th Town Anniversary |
| Issued: 10.07.2023 |
| ›Greenland |
| PostEurop 30 Years |
| Issued: 10.07.2023 |
| ›Azerbaijan |
| The Szerencs Chocolate Factory is 100 Years Old |
| Issued: 07.07.2023 |
| ›Hungary |
| Postal History VI - The Postcode is 50 Years Old |
| Issued: 07.07.2023 |
| ›Hungary |
| 150 Years of the Societe Jersiaise |
| Issued: 04.07.2023 |
| ›Jersey |
| Prominent Armenians - 100th Anniversary of Ghukas Chubaryan |
| Issued: 04.07.2023 |
| ›Armenia |
| 850th Anniversary of the Death of Saint Nerses Shnorhali |
| Issued: 04.07.2023 |
| ›Armenia |
| Serbia - USA, 100 Years of Hollywood |
| Issued: 04.07.2023 |
| ›Serbia |
| The 10th Anniversary of Croatia's Accession to the European Union |
| Issued: 01.07.2023 |
| ›Croatia |
| 160 Years Abolition of Slavery 1863-2023 |
| Issued: 29.06.2023 |
| ›Curacao |
| 150 Years of Metrology in Serbia |
| Issued: 28.06.2023 |
| ›Serbia |
| 60th Anniversary of Amade |
| Issued: 19.06.2023 |
| ›Monaco |