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 2005

The 2005 issuing programme is not available.
  1. Sl001.05-80
    Wns Number
    SL001.05
    Country / Post
    Sierra Leone
    Date of Issue
    January 07, 2005
    Subject
    Year of the Rooster
  2. Sl002.05-80
    Wns Number
    SL002.05
    Country / Post
    Sierra Leone
    Date of Issue
    January 07, 2005
    Subject
    Year of the Rooster
  3. Sl003.05-80
    Wns Number
    SL003.05
    Country / Post
    Sierra Leone
    Date of Issue
    January 28, 2005
    Subject
    Basketball - Leonardo Barbosa
  4. Sl004.05-80
    Wns Number
    SL004.05
    Country / Post
    Sierra Leone
    Date of Issue
    February 02, 2005
    Subject
    Basketball - Vlade Divac