The 15th century was one of extreme monetary confusion in Castile, reaching a peak under Henry IV (1454–1474), who began a simplified standard for currencies. At the Cortes of Segovia in 1471, Henry IV tried to resolve the monetary anarchy then prevailing in his realm. He revalued the gold currency by restoring the old dobla to replace the dobla de la banda and named the new gold coin the enrique, castellano or dobla castellana. Henry IV then defined the "real" as the standard silver coin, with the blanca and media blanca (half) as low-value, silver-alloy currencies (vellón, or billon). Over one hundred legal mints, plus many illegal ones, were replaced by just six mints: in the towns of Burgos, La Coruña, Cuenca, Segovia, Seville and Toledo. However, Henry IV had lacked the means to enforce the monetary laws.
