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.

ET002.13

Country / Post Ethiopia
Date of Issue 19 March 2013
Primary theme Politics & Government
International Organisations
Subject Golden Jubilee of African Union
Width 30.0 mm
Height 40.0 mm
Denomination 0.40 ETB
Number in set 4 (show set)
Layout/Format sheet
Perforations 13.5 by 13.5
Stamp issuing authority Ethiopian Postal Service
Printer