In the classical Roman Empire as a whole – with the exception of Egypt, where its own monetary system was in force : 1 aureus = twenty-five denarii; 1 denarius = four sestertii = eight dupondi and 1 aureus = sixteen aces = thirty-two semisses = sixty-four quadrants. – This division recognizes the aureus as the only gold coin, weighing about 8 grams; the denarius is a silver coin. All coins below are made of brass (sestertius, dupondius, semis) or copper (as, quadrans). – In the case of gold and silver coins, the metal value is approximately equal to the nominal value, which is not the case with the ore coins. Ore coins, however, could not be readily exchanged for silver coins; in this case, a premium was due. The same applied to the exchange of silver coins for gold coins. – When a country changed to the status of a Roman province, the – usually Hellenistic – coins retained their exchange value. Provincial and local coinage often continued to follow the Greek system. Contemporary merchants repeatedly complained about the diversity of coins. – See Amalfinians, Dareiko, Florentines, imperial coins, contorniates, mint, coin commis, numismatics, numismatography, samarkander, sekel, stater, urukagina rule.
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University Professor Dr. Gerhard Merk, Dipl.rer.pol., Dipl.rer.oec.
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