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.

SB021.02

Country / Post Solomon Islands
Date of Issue 8 May 2002
Primary theme Royalty & Monarchies
Subject Queen Mother 1900-2002
Width 30.0 mm
Height 38.0 mm
Denomination 2.30 SBD
Number in set 4 (show set)
Layout/Format sheet
Perforations 14.5 by 14.3
Stamp issuing authority Solomon Islands Postal Corporation
Printer