See also https://asiamedals.info/threads/manchukuo-national-foundation-day-badges.22394
Obverse
日満親善 - Japanese-Manchurian Friendship
祝建國 - National Foundation Day
reverse
満州帝國國典祝賀 - Manchukuo National Laws Celebration
Windmill blades with "A inside C" in the center /obvious reference...
japanese-manchukuo friendship medal
manchukuo cabaret akadama medal
manchukuo medal
manchukuo national foundation day badge
manchukuo national foundation day medal
manchukuo national foundation day watch fob
manchukuo unofficial medal
大日本キャバレー赤玉章
日満親善祝建国満州帝国国典祝賀大日本キャバレー赤玉章
日満親善章
満州帝国章
祝建国章
1st type "White band".
Reverse
民法大[学] - Civil Law University (when read from right to left 大法民 /Taihō Min/ - Basic Law (The Great Dharma; Great Law of Mahāyāna Salvation).
Another scenario: 民法大 is an unknown abbreviation.
Stamped with No. 7.
Marked 純銀 - pure silver.