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.

NR024.05

Country / Post Nauru
Date of Issue 12 September 2005
Primary theme Fauna (Birds - General)
Subject Birdlife International - Samoan Bridled White-eye
Width 37.5 mm
Height 30.0 mm
Denomination 0.25 AUD
Number in set 18 (show set)
Layout/Format miniature sheet of 6 of 6 designs
Perforations 14 by 14
Stamp issuing authority Nauru Post & Philatelic
Printer