The World Association for the Development of Philately (WADP) and the Universal Postal Union (UPU) jointly conceived and developed the WADP Numbering System - WNS, which was launched on 1 January 2002.

PT001.17

Country / Post Portugal
Date of Issue 4 January 2017
Primary theme United Nations
Subject António Guterres - Secretary-general of the United Nations
Width 40.0 mm
Height 30.6 mm
Denomination 0.80 €
Number in set 2 (show set)
Layout/Format sheet of 50
Perforations 13 by 13
Stamp issuing authority CTT Correios de Portugal SA
Printer Imprensa Nacional Casa da Moeda
Connect to the web shop of the issuing stamp authority