Imperial Japan Aviation Agency Glider Instructor Badges/航空局滑空教士徽章
3rd class badge. Reverse of the badge 三級滑空教土徽章 - 3rd Class Glider Instructor Badge 航空局 - Aviation Agency/Bureau Cover of the original cardboard case 三級滑空教士徽章 - 3rd Class Glider Instructor Badge
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