Caracalla, 198-217. Denarius (Silver, 20 mm, 3.17 g, 7 h), Rome, 205. ANTONINVS PIVS AVG Laureate, draped and cuirassed bust of Caracalla to right, seen from behind. Rev. PONTIF TR P VIII COS II Mars, helmeted, standing left, placing his right foot on helmet, holding branch in his right hand and inverted spear in his left. BMC 478. Cohen -, cf. 419 (Aureus). RIC -, cf. 80a (Aureus). Very rare with this bust type, which usually appears on aurei. Good extremely fine.