Caracalla (198-217). AE Dupondius, Rome mint, 210-213. D/ ANTONINVS PIVS AVG BRIT. Radiate head right. R/ SECVRITATI PERPETVAE S C. Draped Securitas seated right on low seat, propping head on right hand and holding sceptre in left hand; in front, altar. RIC IV 515. 12.42 g. 25 mm. Scarce denomination. Green patina. VF.