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.

LK010.15

Country / Post Sri Lanka
Date of Issue 8 July 2015
Primary theme History (Archeology)
History (History of Peoples)
Subject Ancient Sri Lanka - Medieval Eras
Width 30.0 mm
Height 41.0 mm
Denomination 10.00 LKR
Number in set 4 (show set)
Layout/Format sheet of 20, miniature sheet of 4 of 4 designs
Perforations 14 by 13.5
Stamp issuing authority Department of Posts
Printer Department of Government Printing, Sri Lanka