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.

LK016.11

Country / Post Sri Lanka
Date of Issue 29 April 2011
Primary theme Religions & beliefs (Buddhism)
Subject 2600th Sambuddhatva Jayanthi
Width 60.0 mm
Height 30.0 mm
Denomination 5.00 LKR
Number in set 6 (show set)
Layout/Format sheet of 12 of 6 designs
Perforations 14 by 13.5
Stamp issuing authority Department of Posts
Printer Department of Government Printing, Sri Lanka