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. Sl071.04-80
    Wns Number
    SL071.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 24, 2004
    Subject
    25th Anniversary of Pope John Paul II - 1986
  2. Sl072.04-80
    Wns Number
    SL072.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 24, 2004
    Subject
    25th Anniversary of Pope John Paul II - 1987
  3. Sl073.04-80
    Wns Number
    SL073.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 24, 2004
    Subject
    25th Anniversary of Pope John Paul II - 2003
  4. Sl074.04-80
    Wns Number
    SL074.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 24, 2004
    Subject
    25th Anniversary of Pope John Paul II - 2003
  5. Sl075.04-80
    Wns Number
    SL075.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    500th Anniversary of Mona Lisa
  6. Sl076.04-80
    Wns Number
    SL076.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    60th Anniversary of D-Day Landing
  7. Sl077.04-80
    Wns Number
    SL077.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    60th Anniversary of D-Day Landing - 101st Airborne 'Screaming Eagles'
  8. Sl078.04-80
    Wns Number
    SL078.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    60th Anniversary of D-Day Landing
  9. Sl079.04-80
    Wns Number
    SL079.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    60th Anniversary of D-Day Landing
  10. Sl080.04-80
    Wns Number
    SL080.04
    Country / Post
    Sierra Leone
    Date of Issue
    June 01, 2004
    Subject
    60th Anniversary of D-Day Landing - General Dwight D. Eisenhower