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. Sl021.04-80
    Wns Number
    SL021.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Concord over Giza
  2. Sl022.04-80
    Wns Number
    SL022.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Concord over Kenya
  3. Sl023.04-80
    Wns Number
    SL023.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Concord over Kenya
  4. Sl024.04-80
    Wns Number
    SL024.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Concord over Kenya
  5. Sl025.04-80
    Wns Number
    SL025.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Norman Rockwell - Ice Cream Carrier 1940
  6. Sl026.04-80
    Wns Number
    SL026.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Norman Rockwell - The Voyeur 1944
  7. Sl027.04-80
    Wns Number
    SL027.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Norman Rockwell - Teacher's Birthday 1956
  8. Sl028.04-80
    Wns Number
    SL028.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Norman Rockwell - Fisk Tyres Advertisement 1919
  9. Sl029.04-80
    Wns Number
    SL029.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Norman Rockwell - Cousin Reginald plays Pirate 1917
  10. Sl030.04-80
    Wns Number
    SL030.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Hermitage Museum