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.

PK042.04

Country / Post Pakistan
Date of Issue 9 October 2004
Primary theme Fauna
Subject Popular Aquarium Varieties of Tropical fish
Width 32.0 mm
Height 27.0 mm
Denomination 2.00 PKR
Number in set 5 (show set)
Layout/Format sheet of 25 of 5 designs se tenant
Perforations 13 by 13
Stamp issuing authority Pakistan Post Office
Printer Post Office Foundation Press Karachi