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.

Stamps issued with IO003.11

  1. Io001.11-80
    Wns Number
    IO001.11
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 01, 2011
    Subject
    HM Queen Elizabeth II - A Lifetime of Service
  2. Io002.11-80
    Wns Number
    IO002.11
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 01, 2011
    Subject
    HM Queen Elizabeth II - A Lifetime of Service
  3. Io003.11-80
    Wns Number
    IO003.11
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 01, 2011
    Subject
    HM Queen Elizabeth II - A Lifetime of Service
  4. Io004.11-80
    Wns Number
    IO004.11
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 01, 2011
    Subject
    HM Queen Elizabeth II - A Lifetime of Service
  5. Io005.11-80
    Wns Number
    IO005.11
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 01, 2011
    Subject
    HM Queen Elizabeth II - A Lifetime of Service
  6. Io006.11-80
    Wns Number
    IO006.11
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 01, 2011
    Subject
    HM Queen Elizabeth II - A Lifetime of Service