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.

ZA077.13

Country / Post South Africa
Date of Issue 25 October 2013
Primary theme Politics & Government
Subject Mexico South Africa Bilateral Relations XX
Width 48.0 mm
Height 30.45 mm
Denomination B4
Number in set 1
Layout/Format miniature sheet of 1
Perforations 13.3 by 13.3
Stamp issuing authority South African Post Office
Printer Lowe Martin Group