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 12 February 2006
Primary theme Economy & Industry
Energy (Petroleum)
Subject Yacimientos Petroliferos overprint
Width 30.5 mm
Height 26.5 mm
Denomination 2.50 BOB
Number in set 3 (show set)
Layout/Format sheet
Perforations 11 by 11
Stamp issuing authority Empresa de Correos de Bolivia