The Money of the Roman Emperor Augustus

Gold

1 aureus = 25 denarii?

Silver

denarius

quinarius = 1/2 denarius

sestertius = 1/2 quinarius

dupondius = 1/2 sestertius

Bronze

dupondius = 1/8 denarius

as = 1/2 dupondius

semis = 1/2 as

quadrans = 1/2 semis

Later

Constantine introduced the solidus and the centenionalis.