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.

EE022.08

Country / Post Estonia
Date of Issue 28 August 2008
Primary theme Energy (Wind)
Subject Mills - Polma Windmill
Width 36.0 mm
Height 26.0 mm
Denomination 5.50 EEK
Number in set 1
Layout/Format sheet of 10
Perforations 14 by 13.75
Stamp issuing authority Estonian Post
Printer Österreichische Staatsdruckerei
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