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 2011

The 2011 issuing programme is not available.
  1. Cn101.11-80
    Wns Number
    CN101.11
    Country / Post
    China (People's Rep)
    Date of Issue
    November 11, 2011
    Subject
    China 2011 - 27th Asian International Stamp Exhibition - A Clear Autumn Day
  2. Cn102.11-80
    Wns Number
    CN102.11
    Country / Post
    China (People's Rep)
    Date of Issue
    December 10, 2011
    Subject
    Ancient Astronomical Instruments - Joint issue by China and Denmark
  3. Cn103.11-80
    Wns Number
    CN103.11
    Country / Post
    China (People's Rep)
    Date of Issue
    December 10, 2011
    Subject
    Ancient Astronomical Instruments - Joint issue by China and Denmark