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.

BJ004.03

Country / Post Benin
Date of Issue 23 June 2003
Primary theme History
Architecture
Subject Monuments of the Road of the Slave - " Door of Non-Return"
Width 43.5 mm
Height 31.0 mm
Denomination 300 XOF
Number in set 5 (show set)
Layout/Format sheet of 36
Perforations 12.8 by 12.8
Stamp issuing authority Office de Postes et Telecommunications
Printer