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.

CA036.19

Country / Post Canada
Date of Issue 27 March 2019
Primary theme Aviation (Aviation Pioneers)
Subject Canadians in Flight - Elsie MacGill
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 13 by 13
Stamp issuing authority Canada Post
Printer Lowe-Martin
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