Spanish real / peso de a ocho

The story

Pedro I’s silver real dates to about 1363. Its French gros tournois model helps explain the coin, but differences in metrology and the absence of an account-adoption act prevent a direct French-currency parent from being established. By 1373 an ordinance valued the real in Castilian maravedís. ^[1]

The 1497 reform fixed the real at 34 maravedís while maravedí accounting continued. Sixteenth-century real and peso reckoning belonged to that common system. Later divergence between silver and vellón values supports a qualified local account branch from Castilian maravedí reckoning. It does not show the real abolishing and replacing the maravedí in 1497. ^[2]

The map’s dashed connection expresses that historical inference. The exact separation of the account traditions remains uncertain, and the 1497–1603 interval is a development window rather than a currency’s lifetime. ^[2]