Obverse
精勤章 - badge for diligent work
Reverse
稿勞章 - award badge
福岡縣鑛工聯合會 - Fukuoka Prefecture Miners' Federation
Original case.
Case lid reads
精勤十年章 - badge for ten years of diligent work
稿勞章 - award badge
福岡縣鑛工聯合會 - Fukuoka Prefecture Miners' Federation
Variation of the badge (by case and stamp).
Original case.
Badge was made by Sato workshop https://asiamedals.info/threads/bad...to-general-partnership-company-fukuoka.22843/