The first "real" was introduced by King Fernando I around 1380. It was a silver coin and had a value of 120 "dinheiros" (10 "soldos" or "libra"). In the reign of King João I (1385–1433), the "real branco" of "libras" and the "real preto" of 7 "soldos" ( of a "real branco") were issued. By the beginning of the reign of King Duarte I in 1433, the "real branco" (equivalent to 840 "dinheiros") had become the unit of account in Portugal. From the reign of King Manuel I (1495–1521), the name was simplified to "real", coinciding with the switch to minting "real" coins from copper.