It was founded in 1911 as a restricted union of the Universal Postal Union.
Since 1989, the UPAEP member countries are issuing sets of stamps based on a common theme, which always included the logo of the organization.
Date of Issue: 16 May 2011
Values: Stamps of €0,80
Designer: Whitestudio /Eduardo Aires
Printer: Joh. Enschedé
Process: 4-colour offset lithography
Size: stamps 30.6 mm x 40.0 mm
Perforation: Cross of Christ 13 x 13
Paper: True White TR CPST331 110g/m2
Sheet: sheets of 50 stamps