And he bade them be of good courage, as on an average six hundred talentsAbout £120,000 or $583,200. The original amount at the institution of the Confederacy of Delos was 460 talents (1.96.2. The figure here given is an average amount, because the assessment was revised every four years at the Panathenaea.These figures, and all other equivalents of Greek financial statements, are purely conventional, inasmuch as the purchasing power of money was then very much greater than now. of tribute were coming in yearly from the allies to the city, not counting the other sourcesThe ordinary revenue, apart from the tribute, consisted of customs duties, tax on sales, poll tax on resident aliens, rents of state property, especially the silver mines, court fees and fines. of revenue, and there were at this time still on hand in the Acropolis six thousand talentsAbout £1,940,000, or $9,428,400. of coined silver (the maximum amount had been nine thousand seven hundred talents, from which expenditures had been made for the construction of the PropylaeaCompleted about 432 B.c. of the Acropolis and other buildings,Such as the Parthenon, the Odeum, and the Telesterion at Eleusis (see Plut. Per. 13.). as well as for the operations at Potidaea).