1941 badge.
Obverse
表彰 - Award; Commendation
Inside the emblem 鑛 for 鑛山 - Mining
reverse
精勤章 - Diligence Badge
皇紀二千六百一年 - 1941
大日本産業報國會 - Greater Japan Industrial Patriotic Service Association
大阪地方鑛山部會 - Osaka Region Mining Branch of Association
dai nippon sangyō hōkokukai
dainippon sangyō hokokukai
dainippon sangyō hokokukai badge
greater japan industrial patriotic association
industrial patriotic service association badge
movement of industrial service to the country
osaka region mining diligence badge
大日本産業報国会大阪地方鉱山部会精勤章
大日本産業報国会章
大日本産業報国会精勤章
精勤章