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. Sl031.04-80
    Wns Number
    SL031.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Hermitage Museum
  2. Sl032.04-80
    Wns Number
    SL032.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Hermitage Museum
  3. Sl033.04-80
    Wns Number
    SL033.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Hermitage Museum
  4. Sl034.04-80
    Wns Number
    SL034.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Hermitage Museum
  5. Sl035.04-80
    Wns Number
    SL035.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Hermitage Museum
  6. Sl036.04-80
    Wns Number
    SL036.04
    Country / Post
    Sierra Leone
    Date of Issue
    February 24, 2004
    Subject
    Hermitage Museum
  7. Sl037.04-80
    Wns Number
    SL037.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 03, 2004
    Subject
    Marilyn Monroe
  8. Sl038.04-80
    Wns Number
    SL038.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 03, 2004
    Subject
    Marilyn Monroe
  9. Sl039.04-80
    Wns Number
    SL039.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 03, 2004
    Subject
    Marilyn Monroe
  10. Sl040.04-80
    Wns Number
    SL040.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 03, 2004
    Subject
    Marilyn Monroe