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.

PK002.19

Country / Post Pakistan
Date of Issue 9 July 2019
Primary theme Astronomy & Space (Satellites)
Subject Pakistan's First Remote Sensing Satellites
Width 50.5 mm
Height 35.0 mm
Denomination 20.00 PKR
Number in set 1
Layout/Format sheet of 20
Perforations 13 by 13
Stamp issuing authority Pakistan Post Office
Printer National Security Printing Company Karachi