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 Croatia
Date of Issue 25 January 2008
Primary theme Education
Science & Technology (Mathematics)
Subject 250th Anniversary of Printing "Arithmetika Horvatszka"
Width 48.28 mm
Height 29.82 mm
Denomination 3.50 HRK
Number in set 1
Layout/Format sheet of 20
Perforations 14 by 14
Stamp issuing authority Croatian Post Inc
Printer ZRINSKI dd Cakovec Croatia
Connect to the web shop of the issuing stamp authority