Spain

Gold weight and purity converter →
Playwright’s Script Sale in the Corrales de Comedias c.1600–1635
In the corrales de comedias — Madrid’s commercial open-air theatres — playwrights typically sold scripts outright to theatrical companies for approximately 500 reales per comedia, relinquishing all ongoing rights in exchange for the lump sum. Lope de Vega, the dominant playwright of the period and reputed author of over 400 surviving plays, negotiated at the upper end of this range; less established writers received considerably less. The bulk of commercial revenue flowed to the theatrical companies and their financiers rather than the author, making high volume a structural necessity for any playwright seeking to live from the trade. The Spanish real contained approximately 3.38g fine silver; the gold equivalent is estimated at the prevailing 1:13 silver-to-gold ratio.
~130g
Shergold, N.D. A History of the Spanish Stage from Medieval Times until the End of the Seventeenth Century. (Clarendon Press, 1967); McKendrick, Melveena. Theatre in Spain 1490–1700. (Cambridge University Press, 1989).
Velázquez’s Annual Emoluments as Royal Court Painter 1652
By 1652, Diego Velázquez held the post of Aposentador Mayor de Palacio in addition to his role as royal painter to Philip IV, with combined annual emoluments of approximately 5,000 ducados including salary, allowances, and perquisites for materials and lodging. This figure substantially exceeded his formal painter’s salary of 1,000 ducados granted in 1623, reflecting three decades of accumulated court favour and administrative promotion. The Spanish ducado had ceased to circulate as a coin by the mid-seventeenth century and functioned as an accounting unit; the gold equivalent is estimated at the traditional rate of approximately 3.5g fine gold per ducado, yielding a figure that should be treated as an order-of-magnitude approximation.
~17,500g
Brown, Jonathan. Velázquez: Painter and Courtier. (Yale University Press, 1986); Archivo General de Simancas, Contaduría Mayor de Cuentas.