Watch List notes:

Caracalla. AD 198-217. AR Denarius (20mm, 3.32 g, 6h). Rome mint. Struck AD 206. Laureate head right / Mars standing left, leaning on shield and holding spear. RIC IV 83; RSC 424b. Near EF, attractively toned with some iridescence.

From the Matthew Rich Collection. Reportedly ex Galata Coins FPL (April 1977), no. 102.