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. Sl101.04-80
    Wns Number
    SL101.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Orchids - Aspasia Epidendroides
  2. Sl102.04-80
    Wns Number
    SL102.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Orchids - Bulbophyllum Lobbii
  3. Sl103.04-80
    Wns Number
    SL103.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Dogs - Sealyham Terrier
  4. Sl104.04-80
    Wns Number
    SL104.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Dogs - Norwich Terrier
  5. Sl105.04-80
    Wns Number
    SL105.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Dogs - Wheaton Terrier
  6. Sl106.04-80
    Wns Number
    SL106.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Dogs - Bull Terrier
  7. Sl107.04-80
    Wns Number
    SL107.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Dogs - Greyhound
  8. Sl108.04-80
    Wns Number
    SL108.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Sea Lamprey
  9. Sl109.04-80
    Wns Number
    SL109.04
    Country / Post
    Sierra Leone
    Date of Issue
    December 21, 2004
    Subject
    Sierra Leone National Football Team