Plate was added to the back of a standard souvenir compass from early 1900s.
制海記念 - Sea Control Commemorative
Marked with 特許 - patent and with unreadable maker's mark.
Together with a British-made pocket watch.
1904-05 warcommemorative watch fob
japanese commemorativecompassrusso-japanesewarcommemorativecompassrusso-japanesewarcommemorative pendant
russo-japanesewarcommemorative watch fob
sea control commemorativecompass
制海記念方位磁石記章
See also https://asiamedals.info/threads/1894-95-sino-japanese-war-gift-golden-kite-compass-to-generals-officers-and-privates-noinori-naru-hi-ni.27364/
Size 40 x 25 mm.
In the center of reverse
征露記念 - Attacking Russia
around the reverse
明治三七年二月十日 - February 10th, 1904
宣戦發布 -...
1904 russo-japanesewar declaration compass
japanese army compass
japanese compassrusso-japanesewarcommemorative badge
russo-japanesewarcommemorativecompassrusso-japanesewarcommemorative pendant
宣戦發布征露記念方位磁石記章
征露記念方位磁石記章
日露戦争記念の方位磁石
明治三七年二月十日宣戦發布征露記念方位磁石記章