50th Anniversary of Border Guard and Interior State Security Forces, 1984.
Aluminum, paint. The medallion is about 43 mm wide. Excellent condition.
Like its Soviet counterpart, the badge was issued as an award to best officers. Abbreviation on the white band stands for "Ministry of State Security and Department of Border and Internal Troops of Mongolia")
/ A. Battushig, Mongolian Orders, Medals & Badges, fig. E 14/