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.

LA010.09

Country / Post Lao People's Democratic Republic
Date of Issue 5 March 2009
Primary theme Transportation (Rail) (Locomotive & trains)
Subject Lao-Thai Railway Link Officially Opened
Width 46.0 mm
Height 31.0 mm
Denomination 3000 LAK
Number in set 3 (show set)
Layout/Format miniature sheet of 3 of 3 desgns
Perforations 13 by 13
Stamp issuing authority Entreprise des Postes Lao
Printer Post Stamp Printing Company, Vietnam