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.

CZ027.19

Country / Post Czech Republic
Date of Issue 4 September 2019
Primary theme Aviation (Aircraft)
Subject The World in the Clouds - Airplane Electra 10A
Width 52.5 mm
Height 32.0 mm
Denomination E
Number in set 2 (show set)
Layout/Format self adhesive booklet of 8 of 2 designs
Perforations 13 by 13
Stamp issuing authority Czech Post
Printer Post Printing House
Connect to the web shop of the issuing stamp authority