Economic and Political Decline
In 215, Caracalla introduced a new denomination, the antoninianus,
tariffed at 2 denarii, but with a silver content of only 11/2
denarii. Civil war and barbarian invasion drove emperors from 238 to 270 to debase
the antoninianus to a miserable bronze coin with a silver content of 2%.
Silver antoninianus
(AD 215-217) of Caracalla.
Silver antoninianus
(AD 238-239) of Gordian III (AD 238-244).
Gold aureus (AD
256-257) of Valerian (AD 253-260). The small size of such gold coins is due to the
economic crisis of the 3rd century.
Silver dirham of Sasanian
Persian king Shapur I (AD 241-272). Shapur represents a low point of Roman military
fortunes. In AD 260 he captured the emperor Valerian, who was later stuffed as a
trophy of Sasanian victory.
Bronze antoninianus of
the Gallo-Roman emperor Tetricus I (AD 270-273).