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.

LK010.12

Country / Post Sri Lanka
Date of Issue 10 March 2012
Primary theme Fine Arts (Ancient Art)
Fine Arts (Sculpture)
Subject Guardstone at Rathanaprasadaya, Anuradhapura
Width 20.0 mm
Height 25.0 mm
Denomination 50.00 LKR
Number in set 2 (show set)
Layout/Format sheet of 100
Perforations 13.5 by 12
Stamp issuing authority Department of Posts
Printer Department of Government Printing, Sri Lanka