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.

SL092.04

Country / Post Sierra Leone
Date of Issue 17 June 2004
Primary theme Transportation (Ships & Navigation) (Lighthouses)
Subject Lighthouses - Eddystone Lighthouse Great Britain
Width 32.0 mm
Height 47.5 mm
Denomination 4000 SLL
Number in set 5 (show set)
Layout/Format sheet
Perforations 14 by 14
Stamp issuing authority Sierra Leone Postal Services Limited
Printer BDT International Security Printing Ltd