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.


Country / Post Sierra Leone
Date of Issue 21 January 2004
Primary theme Fine Arts (Painting)
Subject Chiao Ping-Chen Paintings
Width 37.5 mm
Height 51.0 mm
Denomination 2000 SLL
Number in set 5 (show set)
Layout/Format miniature sheet of 4 of 4 designs
Perforations 14 by 14
Stamp issuing authority Sierra Leone Postal Services Limited
Printer BDT International Security Printing Ltd