Elagabalus (218-222 A.D.) - Silver Denarius - 18.69mm, 2.35gr
Obverse - IMP CAES M AVR ANTONINVS AVG
Elagabalus, his laureate and draped bust right.
Reverse - PONTIF MAX TR P
Roma, seated left, holding victory and scepter, a shield at her side.

Minted in Rome in 218 A.D.
Reference:
Mattingly, Sydenham, & Sutherland, "Roman Imperial Coinage", Volume 4, Part 2 (RIC), p28, nr. 8
Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Vol. 2, p606, nr. 7539, variety with draped bust.
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 4, p345, nr. 222
Seaby, H.A. & Sear, D.R., "Roman Silver Coins" (RSC), Vol. 3, p118, nr. 222b
Mattingly, Carson & Hill, "Coins of the Roman Empire in the British Museum", Volume 5 (BMC), p530, nr. 1 note (↓ die axis)
Van Meter, D., "Handbook of Roman Imperial Coins", p208, nr. 53.
Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC),  p216, nr.85 (B06, O10, R57, T57, M2)
Quality: obverse - about Very Fine / reverse - Fine