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 Sweden
Date of Issue 12 January 2012
Primary theme Science & Technology (Mathematics)
Subject Octahedrons
Width 27.0 mm
Height 31.0 mm
Denomination Ekonomibrev
Number in set 5 (show set)
Layout/Format coil of 100
Perforations 12 by imperf
Stamp issuing authority Posten Sverige AB
Printer Sweden Post Stamps Security Printing Works
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