Copper Quadrans 17.5mm (2.33gr) Struck 40 A.D. Rome Mint

Obv: C CAESAR DIVI AVG PRON AVG around S - C to right and left of Phrygian ("Liberty") cap.

Rev: COS TERT PON M TR P IIII P P around RCC

 RIC 52, BMC 64, Sear 1804    Tom Mullally Collection