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.

LA004.09

Country / Post Lao People's Democratic Republic
Date of Issue 3 January 2009
Primary theme History (History of Peoples)
Architecture (Classical)
Subject Antiquity of Lao
Width 46.0 mm
Height 36.0 mm
Denomination 7500 LAK
Number in set 4 (show set)
Layout/Format miniature sheet of 4 of 4 designs
Perforations 13 by 13
Stamp issuing authority Entreprise des Postes Lao
Printer Post Stamp Printing Company, Vietnam