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 Latvia
Date of Issue 5 May 2011
Primary theme Explorers & Navigation
Subject Struves Geodetic Arc
Width 30.0 mm
Height 37.0 mm
Denomination 0.55 LVL
Number in set 2 (show set)
Layout/Format miniature sheet of 2 of 2 designs
Perforations 13 by 13
Stamp issuing authority Latvia Post
Printer Baltijas Banknote
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