On September 16, 1939 representatives of the Youth Leagues of Japan, Manchukuo and China gathered for the 15th Congress in Seoul.
Obverse
大日本青年團第十五回大會 - Great Japan Youth League Congress [Convention]
日満支青年交驩會 - Japan-Manchuria-China Youth Exchange of Courtesies [Fraternization] Gathering
reverse
於京城 - at Keijō (name given to Seoul during the Japanese occupation)
紀元二千五百九十九年 = 2599 - 1939
九月十六.十七.日 - September 16-17
But what is the fate of this badge!
It was found wrapped in this handkerchief.
Souvenir of Tokyo [to my Peach].
Handkerchief was kept with envelope.

Another GI bring back.
Obverse
大日本青年團第十五回大會 - Great Japan Youth League Congress [Convention]
日満支青年交驩會 - Japan-Manchuria-China Youth Exchange of Courtesies [Fraternization] Gathering
reverse
於京城 - at Keijō (name given to Seoul during the Japanese occupation)
紀元二千五百九十九年 = 2599 - 1939
九月十六.十七.日 - September 16-17
But what is the fate of this badge!
It was found wrapped in this handkerchief.
Souvenir of Tokyo [to my Peach].
Handkerchief was kept with envelope.

Another GI bring back.