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. Sl001.04-80
    Wns Number
    SL001.04
    Country / Post
    Sierra Leone
    Date of Issue
    January 15, 2004
    Subject
    Year of the Monkey
  2. Sl002.04-80
    Wns Number
    SL002.04
    Country / Post
    Sierra Leone
    Date of Issue
    January 15, 2004
    Subject
    Year of the Monkey
  3. Sl003.04-80
    Wns Number
    SL003.04
    Country / Post
    Sierra Leone
    Date of Issue
    January 15, 2004
    Subject
    Year of the Monkey
  4. Sl004.04-80
    Wns Number
    SL004.04
    Country / Post
    Sierra Leone
    Date of Issue
    January 15, 2004
    Subject
    Year of the Monkey
  5. Sl005.04-80
    Wns Number
    SL005.04
    Country / Post
    Sierra Leone
    Date of Issue
    January 15, 2004
    Subject
    Year of the Monkey
  6. Sl006.04-80
    Wns Number
    SL006.04
    Country / Post
    Sierra Leone
    Date of Issue
    January 21, 2004
    Subject
    Chiao Ping-Chen Paintings
  7. Sl007.04-80
    Wns Number
    SL007.04
    Country / Post
    Sierra Leone
    Date of Issue
    January 21, 2004
    Subject
    Chiao Ping-Chen Paintings
  8. Sl008.04-80
    Wns Number
    SL008.04
    Country / Post
    Sierra Leone
    Date of Issue
    January 21, 2004
    Subject
    Chiao Ping-Chen Paintings
  9. Sl009.04-80
    Wns Number
    SL009.04
    Country / Post
    Sierra Leone
    Date of Issue
    January 21, 2004
    Subject
    Chiao Ping-Chen Paintings
  10. Sl010.04-80
    Wns Number
    SL010.04
    Country / Post
    Sierra Leone
    Date of Issue
    January 21, 2004
    Subject
    Chiao Ping-Chen Paintings