Japan Seafarers Relief Association Diligent Badge/日本海員掖済会勤勉章

1st variation.

Reverse

日本海員掖済會 - Japan Seafarers Relief Association

勤勉章 - Diligent; Hard-working; Industrious Badge

Original case.

 

Another example.

Case.

 

Enamel variation.

Case.

 

2nd variation.

Different stamp.

Case.

 

3rd variation.

Numbered badge of a different stamp.

Reverse stamped with a number "355".