Science Stamp Thematic on WOPA+
Science
| 100 Years - Cantacuzino Institute |
| Issued: 05.11.2021 |
| ›Romania |
| 50th Anniv. of the Montenegrin Academy of Sciences and Arts |
| Issued: 12.10.2021 |
| ›Montenegro |
| Animals in Space |
| Issued: 01.10.2021 |
| ›Saint Vincent and the Grenadines |
| United Nations Decade Of Ocean Sciences For Sustainable Development |
| Issued: 26.08.2021 |
| ›Portugal |
| Thematic Set - Let’s bring back the hug |
| Issued: 04.08.2021 |
| ›Serbia |
| 60th Anniversary of the First Human Space Flight |
| Issued: 07.05.2021 |
| ›Kyrgyzstan KP |
| 150th Anniversary of To Vincas Cepinskis |
| Issued: 30.04.2021 |
| ›Lithuania |
| 50th Anniv. Of The University Computing Centre |
| Issued: 29.04.2021 |
| ›Croatia |
| Planet Earth Day |
| Issued: 22.04.2021 |
| ›Serbia |
| Classic Science Fiction |
| Issued: 15.04.2021 |
| ›Great Britain |
| Health Awareness |
| Issued: 21.09.2020 |
| ›Aruba |
| 100th Anniversary of E.Gudriniece |
| Issued: 18.09.2020 |
| ›Latvia |
| COVID-19 - A Tribute to Those on the Front Line |
| Issued: 13.08.2020 |
| ›Saint Vincent and the Grenadines |
| Institute Of Speleology “Emil Racovita” A Century Of Research |
| Issued: 18.06.2020 |
| ›Romania |
| Medical And Industrial Tubing |
| Issued: 05.06.2020 |
| ›Aland Islands |
| Personalities - Maximilián Hell (1720 – 1792) |
| Issued: 13.05.2020 |
| ›Slovakia |
| 40th Anniv of Eradication of Smallpox |
| Issued: 08.05.2020 |
| ›United Nations |
| Centenary of the Icelandic Met Office |
| Issued: 07.05.2020 |
| ›Iceland |
| The Hungarian Meteorological Service 150 Years Old |
| Issued: 04.05.2020 |
| ›Hungary |
| 50 Years Earth Day |
| Issued: 22.04.2020 |
| ›Aruba |
| International Year of Plant Health |
| Issued: 22.04.2020 |
| ›Serbia |