Kaiki Shōhō (開基勝宝) is an early form of Japanese currency that was issued in 760 (Tenpyō-hōji 4) during the Nara period. These coins were struck in a gold...

Mannen Tsūhō [ja] 萬年通寳 万年通宝 10 Wadōkaichin cash coins Copper Taihei Genpō 大平元寶 大平元宝 10 copper coins Silver Kaiki Shoho 開基勝寶 開基勝宝 10 silver coins Gold...

value of 10 copper coins, as well as a new gold coin named Kaiki Shoho (開基勝寶) with a value of 10 silver coins. Silver minting was soon abandoned however...