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. Sl081.04-80
    Wns Number
    SL081.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    60th Anniversary of D-Day Landing - Bernard Montgomery
  2. Sl082.04-80
    Wns Number
    SL082.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    60th Anniversary of D-Day Landing - 82nd Airborne Division
  3. Sl083.04-80
    Wns Number
    SL083.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    60th Anniversary of D-Day Landing - C-47 Skytrain
  4. Sl084.04-80
    Wns Number
    SL084.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    Athens 2004 Olympics
  5. Sl085.04-80
    Wns Number
    SL085.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    Athens 2004 Olympics
  6. Sl086.04-80
    Wns Number
    SL086.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    Athens 2004 Olympics
  7. Sl087.04-80
    Wns Number
    SL087.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    Athens 2004 Olympics
  8. Sl088.04-80
    Wns Number
    SL088.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 17, 2004
    Subject
    Lighthouses - The Smalls Lighthouse Great Britain
  9. Sl089.04-80
    Wns Number
    SL089.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 17, 2004
    Subject
    Lighthouses - Needles Rock Lighthouse Great Britain
  10. Sl090.04-80
    Wns Number
    SL090.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 17, 2004
    Subject
    Lighthouses - St John's Point Lighthouse Great Britain