Nature Stamp Thematic on WOPA+
Nature
| Four Season |
| Issued: 04.09.2020 |
| ›Aland Islands |
| Estonian Mushrooms – The Panther Cap |
| Issued: 28.08.2020 |
| ›Estonia |
| Little Owls |
| Issued: 12.08.2020 |
| ›Romania |
| Our Natural Assets |
| Issued: 05.08.2020 |
| ›Hungary |
| Prevention of Natural Disaster |
| Issued: 06.06.2020 |
| ›Costa Rica |
| Caribbean Reef Shark |
| Issued: 03.06.2020 |
| ›Antigua and Barbuda |
| International Plant Protection Year |
| Issued: 29.05.2020 |
| ›Latvia |
| Butterflies |
| Issued: 29.05.2020 |
| ›Aruba |
| Nature Protection National Park Biogradska Gora |
| Issued: 27.05.2020 |
| ›Montenegro |
| Mallard Duck |
| Issued: 20.05.2020 |
| ›Antigua and Barbuda |
| Spotted Cleaner Shrimp |
| Issued: 20.05.2020 |
| ›Antigua and Barbuda |
| Endangered Species - Kodofan Giraffe |
| Issued: 02.05.2020 |
| ›Guernsey |
| International Year of Plant Health |
| Issued: 22.04.2020 |
| ›Serbia |
| Croatian Flora - Strictly Protected Species (C) |
| Issued: 20.03.2020 |
| ›Croatia |
| 100 Years of Natur & Emwelt |
| Issued: 10.03.2020 |
| ›Luxembourg |
| Rare Birds |
| Issued: 10.03.2020 |
| ›Luxembourg |
| The Black Vulture |
| Issued: 05.03.2020 |
| ›Saint Vincent and the Grenadines |
| Bromeliads |
| Issued: 05.03.2020 |
| ›Saint Vincent and the Grenadines |
| Nature Wonders of the Republic of Croatia (Defintive) |
| Issued: 28.01.2020 |
| ›Croatia |
| Polar - Fauna |
| Issued: 28.01.2020 |
| ›Romania |
| Definitives - Alderney Birds |
| Issued: 21.01.2020 |
| ›Alderney |