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.

CN009.11

Country / Post China (People's Rep)
Date of Issue 21 February 2011
Primary theme Politics & Government (Politicians)
Subject Early Leaders of the Communist Party (III) - Yun Daiying
Width 30.0 mm
Height 40.0 mm
Denomination 1.20 CNY
Number in set 5 (show set)
Layout/Format sheet of 20
Perforations 13.5 by 13.5
Stamp issuing authority State Post Bureau China National Philatelic Corporation
Printer Henan Post and Telecommunications Printing Works