Obverse
Stylized kanji 柔 for 柔道 - Judo.
+
Emblem of Keio University.
Reverse
慶應商工 - Keio University Faculty of Business and Commerce
柔道部 - Judo Club
卒業生大送別會 - Graduation Farewell Tournament
2596 = 1936
Original case.
送別記念 - Farewell Commemorative
慶應商工柔道部 - Keio University Faculty of Business and Commerce Judo Club
Watch fob was manufactured by the Hayatsu Medal Company https://asiamedals.info/threads/bad...-hayatsu-hosakado-medal-company-medaru.24893/