Badge was manufactured by Samurai Shokai workshop https://asiamedals.info/threads/history-labels-and-marks-of-samurai-shokai-trading-co-samurai.21242/
Suspension marked Samurai Shokai, Yokohama.
Obverse
御大典 - Enthronement
奉祝 - Celebration
reverse
昭和三年十一月十日 - November 10, 1928
横浜市 - Yokohama City
Original case.
横浜市 - Yokohama City
御大典奉祝記念 - Enthronement Celebration Commemorative
See also https://asiamedals.info/threads/equ...enthronement-commemorative-badge-n-c-r.24202/