Denarius

row 1 : 157 BC Roman Republic, 73 AD Vespasian, 161 AD Marcus Aurelius, 194 AD Septimius Severus;
row 2: 199 AD Caracalla, 200 AD Julia Domna, 219 AD Elagabalus, 236 AD Maximinus Thrax.

The denarius was a small silver coin used by the Roman Empire and Roman Republic. The denarius weighed about 3 to 4.5 grams. It was the main coin of Ancient Rome. It became the most common coin produced for circulation but was slowly debased in weight and silver content. The coin was then sometimes made of copper and painted silver in color. During the Empire the front side usually had a picture of the emperor on it.

The denarius was introduced in 211 BC, and was last made in 275 AD. By then it was made of bronze.

Denarius Media

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  Denarius of Octavian and Mark Antony from Ephesus

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  Starting with Nero in 64 AD, the Romans continuously debased their silver coins until, by the end of the 3rd century AD, hardly any silver was left.

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  Flavia Domitilla, wife of Vespasian and mother of Titus and Domitian

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  Quintus Antonius Balbus (c. 83–82 BC)