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.

GB105.12

Country / Post Great Britain
Date of Issue 31 May 2012
Primary theme Royalty & Monarchies
Subject Diamond Jubilee - 60 Years of Service
Width 37.0 mm
Height 35.0 mm
Denomination 1st class
Number in set 8 (show set)
Layout/Format sheet of 30 and 60
Perforations 14 by 14.5
Stamp issuing authority Royal Mail of Great Britain
Printer De La Rue Security Print