Doujinkai Red Star Badge/同仁会紅星章

The easiest way to differentiate between variations.

1st variation/2nd variation/3rd variation

1st variation.

Reverse

同仁 - Doujin https://asiamedals.info/threads/doujinkai-history-badges-and-documents.29449/

Original case.

紅星章- Red Star Badge

 

2nd variation.

Different stamp and different geometry of the case.

 

Uncased badge.

 

3rd variation.

Different stamp.

Case.