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 CN041.11

  1. Cn040.11-80
    Wns Number
    CN040.11
    Country / Post
    China (People's Rep)
    Date of Issue
    May 25, 2011
    Subject
    Scientists of Modern China (V) - Bei Shizhang
  2. Cn041.11-80
    Wns Number
    CN041.11
    Country / Post
    China (People's Rep)
    Date of Issue
    May 25, 2011
    Subject
    Scientists of Modern China (V) - Qian Xuesen
  3. Cn042.11-80
    Wns Number
    CN042.11
    Country / Post
    China (People's Rep)
    Date of Issue
    May 25, 2011
    Subject
    Scientists of Modern China (V) - Hou Xianglin
  4. Cn043.11-80
    Wns Number
    CN043.11
    Country / Post
    China (People's Rep)
    Date of Issue
    May 25, 2011
    Subject
    Scientists of Modern China (V) - Qian Sanqiang