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.

GB004.12

Country / Post Great Britain
Date of Issue 5 January 2012
Primary theme Olympic Games (Paralympics)
Olympic Games (Summer Olympics)
Subject The Olympic and Paralympic Games London 2012
Width 20.0 mm
Height 24.0 mm
Denomination Worldwide
Number in set 4 (show set)
Layout/Format self adhesive sheet of 25
Perforations 15 by 15
Stamp issuing authority Royal Mail of Great Britain
Printer De La Rue Security Print