Madrid, Agustin Fernandez, 1713.
Theorica y practica de la arte de Ensayar. Oro, Plata y Vellon rico. Danse Reglas para Ligar, Triligar, Alear. y Reducir Qualesquiera Cantidades de Oro, y Plata a la Ley del Reyno.
Very rare first and sole edition of this professional guide to assaying gold, silver and assorted precious metals by a practicing Madrid assayer, of interest for the international as well as mercantile history of Spain in the last years of her imperial period. The work treats the physical properties..... More