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.


Country / Post Mongolia
Date of Issue 12 April 2011
Primary theme Astronomy & Space (Astronauts & Cosmonauts)
Subject 50th Anniversary of the First Human Space Flight
Width 35.5 mm
Height 35.5 mm
Denomination 500 MNT
Number in set 1
Layout/Format sheet
Perforations 12 by 12
Stamp issuing authority Postage Stamp Authority of Mongol Post
Printer Postage Stamp Printing House of State Postal Bureau
Connect to the web shop of the issuing stamp authority