Obverse
神 for 神奈川縣 - Kanagawa Prefecture
reverse
神奈川縣 - Kanagawa Prefecture
大正拾年 - 1921
陸軍特別大演習 - Army Large Special Maneuvers
Original case.
神奈川縣 - Kanagawa Prefecture
大正十年 - 1921
陸軍特別大演習 - Army Large Special Maneuvers
委員章 - Committee Member Badge
Badge was manufactured by the famous Samurai Shokai workshop https://asiamedals.info/threads/history-labels-and-marks-of-samurai-shokai-trading-co-samurai.21242
At the bottom
橫濱本町サムライ商會 - Yokohama City Samurai Shokai