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.

PL050.03

Country / Post Poland
Date of Issue 18 August 2003
Primary theme Post & Philately
Architecture
Subject XIX National Philatelic Exhibition "Katowice 2003"
Width 31.0 mm
Height 39.0 mm
Denomination 3.40 PLN
Number in set 1
Layout/Format miniature sheet of 1
Perforations 11.7 by 11
Stamp issuing authority Polish Post
Printer PWPW Polska Wytwórnia Papierów Wartosciowych
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