A beautiful 10 Sen from Japan. 0.7200 silver.
Japanese dates on coins start with the era 明治 (Meiji) 1867 – 1912 and then 4 x 10 + 5 shown reading clockwise looking towards the centre of the coin. So this coin is 45th Regnal Year of Emperor Mutsuhito. Or in western calendar 1912. *
Thank you http://worldcoingallery.com/countries/Japanese.htm for image and information on dating Japan coins.
* I hope, corrections or confirmations very welcome 🙂
Thank you NGC for images