The easiest way to differentiate between variations.
1st variation/2nd variation/3rd variation/4th variation
1st variation.
Reverse
同仁 - Doujin https://asiamedals.info/threads/doujinkai-history-badges-and-documents.29449/
Original case.
青寶星章- Green Jewel/Treasure Star Badge...
d. kobayashi watch shop
doujinkai badge
doujinkai green jewel star badge
japanese association for universal benevolence
japanese benevolence badge
japanese universal benevolence association badge
同仁会章
同仁会青宝星章
小林時計店
