See https://asiamedals.info/threads/battleship-mikasa-preservation-society-commemorative-watch-fob.25869/
Size 25 mm.
Obverse
三笠 - Mikasa
reverse
千慮不惑 /Senryo Fuwaku/ - 1000 Considerations [much thought], Following Right Course [has no doubts]. Kotowaza (Japanese proverb) by Kitagawa...
