Imperial period badges (1889-1949).
This type was introduced around early 1930s. Its predecessors https://asiamedals.info/threads/early-membership-badges-of-imperial-marine-rescue-association.23669/
Early badges (metal and hot enamel).
Size (approximately) 30 x 39 mm.
Reverse
正會員 -Regular Member
帝国水難救済會 - Imperial Japan Marine Rescue Association
This type was introduced around early 1930s. Its predecessors https://asiamedals.info/threads/early-membership-badges-of-imperial-marine-rescue-association.23669/
Early badges (metal and hot enamel).
Size (approximately) 30 x 39 mm.
Reverse
正會員 -Regular Member
帝国水難救済會 - Imperial Japan Marine Rescue Association