Caracalla (198-217 A.D.) - Silver Denarius - 16.85mm, 2.93gr
Obverse - ANTONINVS PIVS AVG GERM
Caracalla, his laureate and bearded head right
Reverse - PM TR P XVIIII COS IIII PP
Serapis, a modius on his head, standing facing,
head left, raising right hand and holding scepter.

Minted in Rome in 216 A.D.
Reference:
Mattingly, H & Sydenham, E.A., "Roman Imperial Coinage", Volume 4, Part 1 (RIC), p253, nr. 280 (c)
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 4, p180, nr. 348
Seaby, H.A. & Sear, D.R., "Roman Silver Coins" (RSC), Volume 3, p76,  nr. 348
Hill, P.V., "The Coinage of Septimius Severus and his family of the Mint of Rome" (CSS), p35, nr. 1532
Mattingly, Carson & Hill, "Coins of the Roman Empire in the British Museum", Volume 5 (BMC), p461, nr. 168 (↓ die axis)
Van Meter, D., "Handbook of Roman Imperial Coins", p197, nr. 64/5.
Quality: Fine+