 In 760, a reform was put in place, in which a new copper coin called "Mannentsūhō" (万年通寶) was worth 10 times the value of the former "Wadōkaichin", with also a new silver coin named "Taiheigenbō" (大平元寶) with a value of 10 copper coins, as well as a new gold coin named "Kaikishōhō" (開基勝寶) with a value of 10 silver coins.Silver minting was soon abandoned however, but copper minting took place throughout the Nara period.A variety of coin types are known, altogether 12 types, including one coin type in gold.