MONGOLIA: STAMP COLLECTION n°128 Stamps U (I.428) EUR 5,00 - PicClick IT
Philasearch.com : Stamps Mongolia
Ukraine - Circa 2018: A Postage Stamp Printed In Mongolia Show Copy Of Mongolian Stamp About Space. Series: Interkosmos Program. Circa 1981. Stock Photo, Picture and Royalty Free Image. Image 94167994.
Postage stamps and postal history of Mongolia - Wikipedia