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.

SE021.17

Country / Post Sweden
Date of Issue 1 June 2017
Primary theme Holy Days & Celebrations (Personal greetings)
Flora (Trees)
Subject #mittfrimärke (My Stamp)
Width 25.5 mm
Height 36.0 mm
Denomination Brev
Number in set 5 (show set)
Layout/Format self adhesive sheet of 10 of 5 designs
Perforations 14 by 14
Stamp issuing authority PostNord Stamps
Printer PostNord Stamps
Connect to the web shop of the issuing stamp authority