2026Endangered Species - (Vienna) - Set CTO

On 24 April 2026 the United Nations Postal Administration continues its Endangered Species stamp series with the issuance of twelve stamps, three maximum cards, a limited-edition silk cover and the 2026 Endangered Species folder. The 2026 Endangered Species stamps shine a spotlight on species that often go unnoticed in conservation conversations: medicinal and aromatic plants (MAPs). This group of flora is not only vital to ecosystems but also deeply woven into human culture, health and trade.