http://agathe.gr/democracy/administration_and_bureaucracy.html
Administration and Bureaucracy The economy of Athens was supervised by numerous boards of officials in charge of the mint, the marketplace, weights and measures, and the grain and water supplies. Most ... Set of official weights, about 500 B.C. Stater. 0. 063 m. X 0.064 m.; quarter: 0.039 m. X 0.039 m.; sixth: 0.033 m. ... This silver coinage, which probably began in the 6th century B.C., continued to be minted for some 500 years. ilver and bronze coins of Athens, 5th-3rd centuries B.C.