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.


Country / Post Bolivia
Date of Issue 28 August 2009
Primary theme Minerology & Geology (Mountains & Geological features)
Subject 10 Years since the Conquest of Mount Everest by a Bolivian
Width 32.0 mm
Height 43.0 mm
Denomination 0.50 BOB
Number in set 2 (show set)
Layout/Format sheet of 100
Perforations 13.5 by 13.5
Stamp issuing authority Empresa de Correos de Bolivia
Printer Industrias Lara Bisch SA