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.

IO010.07

Country / Post British Indian Ocean Territories
Date of Issue 1 June 2007
Primary theme Royalty & Monarchies
Subject Diamond Wedding Anniversary of HM Queen Elizabeth II & HRH Prince Philip
Width 30.0 mm
Height 37.5 mm
Denomination 0.90 GBP
Number in set 5 (show set)
Layout/Format sheet of 6
Perforations 14 by 14
Stamp issuing authority British Indian Ocean Territory Administration
Printer BDT International Security Printers