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.

MN008.17

Country / Post Mongolia
Date of Issue 30 April 2017
Primary theme Fine Arts (Jewellery)
Minerology & Geology (Minerals)
Subject Traditional 9 Treasures of Mongolia - Steel
Width 50.0 mm
Height 30.0 mm
Denomination 400 MNT
Number in set 9 (show set)
Layout/Format miniature sheet of 9 of 9 designs
Perforations 12 by 12
Stamp issuing authority Postage Stamp Authority of Mongol Post
Printer Beijing Stamp Printing House of State Postal Bureau
Connect to the web shop of the issuing stamp authority