Caracalla. AD 198-217. AR Denarius (19mm, 3.18 g, 12h). Rome mint. Struck AD 213. Laureate and bearded head right / Libertas standing left, holding pileus and vindicta. RIC IV 209a; RSC 224. Near EF.
According to A Dictionary of Ancient Roman Coins by John Melville Jones, "Libertas", the vindicta, which Libertas carries, was "the rod with which a slave was touched during the ceremony of manumission or liberation."