Marcia Otacilia Severa
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Marcia Otacilia Severa was the Roman empress and wife of Emperor Philip the Arab, who reigned over the Roman Empire from 244 to 249. She was the mother of co-emperor Philip II.
Possible bust of Otacilia Severa, Walters Art Museum, Baltimore.
Silver Antoninianus of Otacilia Severa. Inscription: M OTACILIA SEVERA AVG / CONCORDIA AVGG; 247 AD.
On a tetradrachm of Antioch, Syria, struck AD 247.
Antoninianus
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The antoninianus or pre-reform radiate was a coin used during the Roman Empire thought to have been valued at 2 denarii. It was initially silver, but was slowly debased to bronze with a minimal silver
Row 1: Elagabalus (silver 218–222 AD), Trajan Decius (silver 249–251 AD), Gallienus (billon 253–268 AD Asian mint); Row 2: Gallienus (copper 253–268 AD), Aurelian (silvered 270–275 AD), barbarous radiate (copper), barbarous radiate (copper)
The rapid decline in silver purity of the antoninianus