The Postal Union of the Americas, Spain and Portugal ("UPAEP") is a regional association of the postal authorities in Latin America, the Caribbean, the United States, Canada, Spain, and Portugal, headquartered in Montevideo. It was founded in 1911 as a restricted union of the Universal Postal Union. As the Europa stamps, each country issue a single or a set of stamps following a common theme. The 2023 theme was "Stamps and Philately".
Stamps:
America UPAEP 2023 - "Stamps and Philately" - Issued: 22-11-2023
2x Flor de la Cantuta - Issued: 00-00-2019
To note this cover was send on leap day 29th February!
Many thanks to Gloria!