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.

All registered stamps issued by Sierra Leone in 2004

The 2004 issuing programme is not available.
  1. Sl091.04-80
    Wns Number
    SL091.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 17, 2004
    Subject
    Lighthouses - Bell Rock Lighthouse Great Britain
  2. Sl092.04-80
    Wns Number
    SL092.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 17, 2004
    Subject
    Lighthouses - Eddystone Lighthouse Great Britain
  3. Sl093.04-80
    Wns Number
    SL093.04
    Country / Post
    Sierra Leone
    Date of Issue
    September 11, 2004
    Subject
    Christmas 2004
  4. Sl094.04-80
    Wns Number
    SL094.04
    Country / Post
    Sierra Leone
    Date of Issue
    September 11, 2004
    Subject
    Christmas 2004
  5. Sl095.04-80
    Wns Number
    SL095.04
    Country / Post
    Sierra Leone
    Date of Issue
    September 11, 2004
    Subject
    Christmas 2004
  6. Sl096.04-80
    Wns Number
    SL096.04
    Country / Post
    Sierra Leone
    Date of Issue
    September 11, 2004
    Subject
    Christmas 2004
  7. Sl097.04-80
    Wns Number
    SL097.04
    Country / Post
    Sierra Leone
    Date of Issue
    September 11, 2004
    Subject
    Christmas 2004
  8. Sl098.04-80
    Wns Number
    SL098.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Orchids - Odontonia Vesta
  9. Sl099.04-80
    Wns Number
    SL099.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Orchids - Ancistro Rothschildianus
  10. Sl100.04-80
    Wns Number
    SL100.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Orchids - Ansellia Africana