Regular Member Badge (predecessor of this type https://asiamedals.info/threads/regular-member-badges-of-marine-rescue-association.23395/)
It has approximate diameter 12.7 mm.
early membership badges
full member badge
imperial japan sea disaster rescue association
imperial marine rescue association badges
lifetime regular member badge
regular member badge
帝国水難救済会員章
正會員假徽章
終身正會員假徽章