To return. At the time of its adoption by the Christian powers of Spain, the maravedi (or sueldo de oro) was equal to 1⁄6 onza of gold.
To this maravedi de oro was subsequently given the name of Alfonsi, supposititiously from Alfonso VI., the first to issue them.
The first important change in this monetary system of Gothic Spain—though one of detail rather than system—was effected by Ferdinand II. of Leon, who, in 1157, coined the silver leones of the value of half the silver sueldo (= 12 dineros).
In 1222 S. Ferdinand introduced the sueldo pepiones.
Sueldo de oro = 10 metales or mitgales, 1 metale = 18 pepiones.
But both these importations were suppressed by Alfonso X., the Wise, of Castile. Page 322
In 1252 he coined his maravedis blancos, or Burgaleses, to replace the sueldos pepiones.
6 dineros = 1 sueldo, 15 sueldos = 1 maravedi Burgalese.
This maravedi bore the ratio of 1: 6 to the old maravedi de oro.
This money (Burgalese) was subsequently known as moneda viejo, maravedis viejos, or moneda blanca.