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.


Country / Post Sri Lanka
Date of Issue 9 October 2007
Primary theme Astronomy & Space (Astronomy)
Subject Constellations - Aquarius
Width 20.0 mm
Height 24.5 mm
Denomination 20.00 LKR
Number in set 16 (show set)
Layout/Format sheet of 150, miniature sheet of 12 of 12 designs
Perforations 14 by 14
Stamp issuing authority Department of Posts
Printer Department of Government Printing, Sri Lanka
Connect to the web shop of the issuing stamp authority