The mint law of the Indies (Recopilación, libro IV, títulos 23 and 24)

The law that put mints in Mexico City, Santa Fe de Bogotá and Potosí and then bound their output to a single standard: the same fineness, value, weight, dies and punches as the coin of Castile. It names every office in a mint, halves the Castilian seigniorage as a relief to the Indies, gates coining behind proof that the royal fifth was paid, and — in the next título — forbids anyone at all to trade in unassayed metal.