Photo courtesy of the owner.
There were four Inner Mongolia Grand Councils.
1st was held on April 20, 1936.
2nd was held on October 27, 1937.
3rd was held on July 1, 1938 https://asiamedals.info/threads/third-inner-mongolia-grand-council-commemorative-medal.23710/
4th was held on August 29...
innermongoliainnermongolia awards
innermongoliagrandcouncil commemorative medalinnermongoliagrandcouncilmedalinnermongoliamedals
japanese puppet state medal
第三次蒙古大會紀念章
第三次蒙古大會記念章