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.

PL055.03

Country / Post Poland
Date of Issue 9 October 2003
Primary theme Post & Philately
Subject World Post Day
Width 31.0 mm
Height 42.5 mm
Denomination 2.10 PLN
Number in set 1
Layout/Format sheet of 50
Perforations 11.5 by 11.5
Stamp issuing authority Polish Post
Printer PWPW Polska Wytwórnia Papierów Wartosciowych
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