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.

Stamps issued with SL061.04

  1. Sl053.04-80
    Wns Number
    SL053.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 17, 2004
    Subject
    Lo Moth
  2. Sl054.04-80
    Wns Number
    SL054.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 17, 2004
    Subject
    Hackberry Butterfly
  3. Sl055.04-80
    Wns Number
    SL055.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 17, 2004
    Subject
    Red Admiral
  4. Sl056.04-80
    Wns Number
    SL056.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 17, 2004
    Subject
    Spangled Fritillary
  5. Sl057.04-80
    Wns Number
    SL057.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 17, 2004
    Subject
    Cecropia Moth
  6. Sl058.04-80
    Wns Number
    SL058.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 17, 2004
    Subject
    Pearl Crescent
  7. Sl059.04-80
    Wns Number
    SL059.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 17, 2004
    Subject
    Pipevine Swallowtail
  8. Sl060.04-80
    Wns Number
    SL060.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 17, 2004
    Subject
    Alfalfa Looper
  9. Sl061.04-80
    Wns Number
    SL061.04
    Country / Post
    Sierra Leone
    Date of Issue
    May 17, 2004
    Subject
    Tiger Swallowtail