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.

SL101.04

Country / Post Sierra Leone
Date of Issue 21 December 2004
Primary theme Flora (Orchids)
Subject Orchids - Aspasia Epidendroides
Width 31.5 mm
Height 31.5 mm
Denomination 1700 SLL
Number in set 5 (show set)
Layout/Format miniature sheet of 4 of 4 designs
Perforations imperforate
Stamp issuing authority Sierra Leone Postal Services Limited
Printer Cartor