Cupronickel, paint.
Reverse (and case lid)
名譽員會章 - Honorary Member Badge
財團法人 - Foundation
大日本防空協會 - Dainippon Air Defense Association
Reverse (and case lid)
名譽員會章 - Honorary Member Badge
財團法人 - Foundation
大日本防空協會 - Dainippon Air Defense Association