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.

SE029.11

Country / Post Sweden
Date of Issue 6 May 2011
Primary theme Explorers & Navigation
Subject World Heritage Site - Struve Geodesic Arc
Width 55.0 mm
Height 61.0 mm
Denomination 12.00 SEK
Number in set 2 (show set)
Layout/Format miniature sheet of 2 of 2 designs
Perforations 13 by 13
Stamp issuing authority Posten Sverige AB
Printer Sweden Post Stamps Security Printing Works
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