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 IO002.03

  1. Io001.03-80
    Wns Number
    IO001.03
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 17, 2003
    Subject
    Sea slugs - Halgerda tesselata
  2. Io002.03-80
    Wns Number
    IO002.03
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 17, 2003
    Subject
    Sea slugs - Notodoris minor
  3. Io003.03-80
    Wns Number
    IO003.03
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 17, 2003
    Subject
    Sea slugs - Nembrotha lineolata
  4. Io004.03-80
    Wns Number
    IO004.03
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 17, 2003
    Subject
    Sea slugs - Chromodoris quadricolor
  5. Io005.03-80
    Wns Number
    IO005.03
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 17, 2003
    Subject
    Sea slugs - Glossodoris cincta
  6. Io006.03-80
    Wns Number
    IO006.03
    Country / Post
    British Indian Ocean Territories
    Date of Issue
    March 17, 2003
    Subject
    Sea slugs - Chromodoris ch. leopardus