1st type "plastic badge".
Size 49x23 mm.
Obverse
日獨青少年團交驩記念 - Japan-Germany Youth Group Fraternization /exchange of courtesies (cordialities)/ Commemorative
In German version inscription 日獨青少年團交驩 were translated as Japanisch-Deutscher Jugendaustausch - Japan-Germany Youth Exchange...