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.

GB033.12

Country / Post Great Britain
Date of Issue 23 February 2012
Primary theme Mankind (Women)
History (World War I & II)
Subject Britons of Distinction - Odette Hallowes 1912-1995 SOE agent in Occupied France
Width 35.0 mm
Height 35.0 mm
Denomination 1st class
Number in set 10 (show set)
Layout/Format sheet of 25 and 50
Perforations 14.5 by 14.5
Stamp issuing authority Royal Mail of Great Britain
Printer Walsall Security Printers