ROMAN EMPIRE. Caracalla. AD. 198-217. AR Denarius (3.40 gm; 19 mm). Struck in Rome, 212-3 AD. ANTONINVS PIVS - AVG BRIT Head laureate right / MARTI PROPVG - NATORI Mars advancing left holding spear and trophy. BM 87; RSC 150; RIC 223. Choice EF. Lightly toned.