It was in the reign of this latter King that the general movement of adoption of gold coinage first touched Spain. The earliest gold coins were Alfonso's _doblas_, subsequently known as _castellanos_. The weight of this coin has been variously assigned as 48 to a mark or 50 or 51. Taking the tale of 50 to the mark, the weight per piece would be 92-4/25 grms. (= 4.60090 grms.) of 23-3/4 quilates fine (= .989 fine). Pedro I. made gold doblas of the weight of 90 grs., and this endured till the days of John I., 1379-90, who preserved the same weight but lowered the standard. Under Henry III. the standard of 23-3/4 quilates was again restored. For the movement of the gold coins subsequent to Ferdinand and Isabella, see the Table. 3. The silver _real_ first appears under Pedro I., 1350-69. It was issued at a tale of 66 to a mark, and 11 dineros 4 grs. fine. Under Henry II. of Castile, 1369-79, these reals undergo extraordinary debasement, the standard being reduced to .279, .129, .060, and so on; but a recovery took place under his successor, John I., 1379-90, who returned to the standard of Pedro I., substituting for the debased real his own vellon money, under the titles of _blancos_ and _Agnus Dei_, a money known later as _blancas_ and _maravedises de moneda blanca_. The restorer of the Spanish coinage was, however, not John so much as his son, Henry III., 1390-1406. By his ordinance of 21st January 1391, issued at the instance of the Cortes of Madrid, 1390, the blancos of John I. were reduced in equivalence to 1 coronado. Gold coins were restored to the tale and standard of Alfonso XI., and the silver real to those of Pedro I. The vellon money, however, of this reign--the blancos in particular--present a confusion which has hitherto baffled the most learned. It has been computed that one hundred and thirty-two monies of various denominations circulated in Castile under this King. In brief, the system from his day till the time of Ferdinand and Isabella may be thus tabularly expressed:--