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.

NG005.08

Country / Post Nigeria
Date of Issue 8 August 2008
Primary theme Olympic Games (Summer Olympics)
Subject Beijing Olympic Games 2008
Width 40.0 mm
Height 24.0 mm
Denomination 20 NGN
Number in set 3 (show set)
Layout/Format sheet of 50
Perforations 13 by 13
Stamp issuing authority Nigerian Postal Service
Printer Nigerian Security Printing & Minting Co Ltd