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.


Country / Post Portugal
Date of Issue 2 January 2002
Primary theme Fauna (Horses)
Subject selo sem taxa
Width 37.0 mm
Height 25.0 mm
Denomination A
Number in set 1
Layout/Format sheet
Perforations 13.4 by 13.4
Stamp issuing authority CTT Correios de Portugal SA
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