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.

XG003.03

Country / Post Niuafo'ou
Date of Issue 28 March 2003
Primary theme Fauna
Holy Days & Celebrations
Subject Niuafo'ou - Celebrating the Year of the Sheep 2003
Width 42.0 mm
Height 30.0 mm
Denomination 1.00 TOP
Number in set 8 (show set)
Layout/Format miniature sheet of 4 of 4 designs
Perforations 13.2 by 13.4
Stamp issuing authority Tonga Postal Services General Post Office
Printer Wyatt & Wilson Print Limited New Zealand