Photo courtesy of the owner.
Reverse
復興式典紀念 - Reconstruction Ceremony Commemorative
昭和五年三月 - March 1930
芝區 -Shiba Ward
Marked with Martlet for Hattori https://asiamedals.info/threads/history-labels-i-marks-of-hattori-watch-shop-tokyo.19361/
Original case.
Hattori workshop label.
