Size 21 mm.
Obverse
参加記念章 - Commemorative Badge for Participant
reverse
大日本飛行少年團 - Dai Nihon Hikō Shōnen-dan / Greater Japan Aviation Boy Scouts / Dainippon Flight Boy Group
Obverse
参加記念章 - Commemorative Badge for Participant
reverse
大日本飛行少年團 - Dai Nihon Hikō Shōnen-dan / Greater Japan Aviation Boy Scouts / Dainippon Flight Boy Group