See also https://asiamedals.info/threads/1939-japan-manchukuo-republic-of-china-athletic-competition-badge.23882/
1st variation.
Obverse
康徳六年 - 1939
日満華,
where
華 for 華民國國民政府 Republic of China National Government
満 for 滿洲帝國 - Manzhou Diguo
日 for 日本 - Japan
交驩競技大会 - Friendship Athletics...
