Central Kanji: "一圓" (Ichi Yen - 1 Yen). Empire of Japan Old Coins Dainippon Ichien 1 Yen Silver. 900 ND 1871-1914. This is a 1 Yen Silver Coin from the Empire of Japan. Material.900 Silver. Imperial Chrysanthemum at the top (symbol of the Japanese imperial family).