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.

PL031.03

Country / Post Poland
Date of Issue 28 March 2003
Primary theme Literature, Press and Comics
Subject 500th Anniversary of the Birth of Andrzej Frycz Modrzewski
Width 31.0 mm
Height 42.5 mm
Denomination 1.20 PLN
Number in set 1
Layout/Format sheet of 50
Perforations 11.5 by 11.3
Stamp issuing authority Polish Post
Printer PWPW Polska Wytwórnia Papierów Wartosciowych
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