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AVGVSTI COS - On gold, silver and bronze coins of Caracalla, this legend is accompanied by the type of that Emperor and his father, the Emperor Septimius Severus, sitting together on a n estrade, both clothed in the toga; on one side is a lictor with a rod; on the other, a togate figure. This coin (of which Khell, in his Supplement to Vaillant, has given an engraving), preserves the memory of the consulship, which Caracalla served as the colleague of his father in 202 A.D. Invested with this dignity, the two emperors went into Egypt, and thence returning to Rome, the son took Plautilla as his wife. There is a similar legend and type, but on a dupondius, in the mintage of Severus.