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 China (People's Rep) in 2004

The 2004 issuing programme is not available.
  1. Cn091.04-80
    Wns Number
    Country / Post
    China (People's Rep)
    Date of Issue
    December 05, 2004
    Chinese Ancient Calligraphy - Official Script