Size 25 x 30 mm.
Weight 7 g.
Reverse
第一潜水戦隊 - First Submarine Squadron http://hush.gooside.com/Order/GF/ss.html
昭和九年 - 1934
Original case.
Watch fob was made by Hattori workshop https://asiamedals.info/threads/history-labels-i-marks-of-hattori-watch-shop-tokyo.19361/
Weight 7 g.
Reverse
第一潜水戦隊 - First Submarine Squadron http://hush.gooside.com/Order/GF/ss.html
昭和九年 - 1934
Original case.
Watch fob was made by Hattori workshop https://asiamedals.info/threads/history-labels-i-marks-of-hattori-watch-shop-tokyo.19361/