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 QA004.04

  1. Qa004.04-80
    Wns Number
    QA004.04
    Country / Post
    Qatar
    Date of Issue
    August 13, 2004
    Subject
    XXVIII Olympiad
  2. Qa005.04-80
    Wns Number
    QA005.04
    Country / Post
    Qatar
    Date of Issue
    August 13, 2004
    Subject
    XXVIII Olympiad