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.

CN011.11

Country / Post China (People's Rep)
Date of Issue 8 March 2011
Primary theme Fine Arts
Minerology & Geology (Minerals)
Subject Liangzhu Jade Artifacts
Width 30.0 mm
Height 40.0 mm
Denomination 1.20 CNY
Number in set 2 (show set)
Layout/Format sheet of 12
Perforations 13.5 by 13.5
Stamp issuing authority State Post Bureau China National Philatelic Corporation
Printer Beijing Postage Stamp Printing House