Pietas – Wikipedia

Pietas was represented on coin by cult objects, but also as a woman conducting a sacrifice by means of fire at an altar. In the imagery of sacrifice, libation was the fundamental act that came to symbolize pietas. Pietas is first represented on Roman coins on denarii issued by Marcus Herennius in 108 or 107 BC. Pietas appears on the obverse as a divine personification, in bust form; the …

https://en.wikipedia.org/wiki/Pietas