Agnes Mary Clerke,
1911 Encyclopædia Britannica, Volume 7…
(1911)
“ The only work published by Copernicus on his own initiative was a Latin version of the Greek Epistles of Theophylact (Cracow, 1509) . His treatise De monetae cudendae ratione, 1526 (first printed in 1816) , written by order of King Sigismund I., is an exposition of the principles on which it was proposed to reform the currency of the Prussian provinces of Poland. It advocates unity of the monetary system throughout the entire state, with strict integrity in the quality of the coin, and the charge of a seigniorage sufficient to cover the expenses of mintage. ”
