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.

CA076.18

Country / Post Canada
Date of Issue 26 July 2018
Primary theme Meteorology (Natural events)
Subject Weather Wonders - Lenticular clouds
Width 40.0 mm
Height 32.0 mm
Denomination Permanent
Number in set 10 (show set)
Layout/Format miniature sheet of 5 of 5 designs
Perforations 14 by 14
Stamp issuing authority Canada Post
Printer Lowe-Martin
Connect to the web shop of the issuing stamp authority