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.

BE001.11

Country / Post Belgium
Date of Issue 3 January 2011
Primary theme Fauna (Birds - General)
Subject Northern Pintail
Width 24.1 mm
Height 28.0 mm
Denomination 0.08 €
Number in set 1
Layout/Format sheet of 10
Perforations 11.5 by 11.5
Stamp issuing authority La Poste De Post Belgique
Printer La Poste - Imprimerie du Timbre à Mechelen