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.

CZ023.17

Country / Post Czech Republic
Date of Issue 21 June 2017
Primary theme Post & Philately
Subject Pneumatic Post
Width 37.0 mm
Height 37.0 mm
Denomination A
Number in set 1
Layout/Format sheet of 35
Perforations 12 by 12
Stamp issuing authority Czech Post
Printer Post Printing House
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