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.

SE020.05

Country / Post Sweden
Date of Issue 10 March 2005
Primary theme Flora (Flowers - General)
Subject Signs of Spring
Width 37.5 mm
Height 26.5 mm
Denomination Brev
Number in set 4 (show set)
Layout/Format self adhesive booklet of 10 of 4 designs
Perforations 10 by imperf
Stamp issuing authority Posten Sverige AB
Printer Sweden Post Stamps
Connect to the web shop of the issuing stamp authority