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.

AO015.08

Country / Post Angola
Date of Issue 30 June 2008
Primary theme Geography & Meteorology (Seas, lakes & rivers)
Subject Angolan Rivers - Foz do Rio Mbridge
Width 40.0 mm
Height 30.0 mm
Denomination 40 AOA
Number in set 4 (show set)
Layout/Format sheet
Perforations 13 by 13
Stamp issuing authority Empresa Nacional de Correios e Telegrafos de Angola
Printer Cartor Security Printing