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.

CA017.18

Country / Post Canada
Date of Issue 15 January 2018
Primary theme Minerology & Geology (Mountains & Geological features)
Subject From Far and Wide - Nááts'įhch'oh National Park Reserve (Northwest Territories)
Width 24.0 mm
Height 20.0 mm
Denomination 1.80 CAD
Number in set 23 (show set)
Layout/Format self adhesive coil of 50
Perforations 8 by imperforate
Stamp issuing authority Canada Post
Printer Lowe-Martin
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