Antoninus Pius AD 138-161. Reverse legend uncertain, TR POT [XX or XIX] COS IIII. Rome
As Æ

25 mm, 11,00 g

[ANTONI]NVS AVG [PIVS P] P IMP II, laureate head right / TR P[OT XX CO]S IIII, Fides Exercitus standing facing, head left, holding standard in each hand; S-C across fields.

Very Fine

RIC 943 or RIC 965 both var. (Sestertius).