Severus Alexander. 222-235 AD. AR, Silver Denarius. Mars. RIC IV 160; BMCRE 72; RSC 173. EF. $75.00. $43 11 Mar, 2001 Seller CNG on ebay Severus Alexander. 222-235 AD. AR Denarius (2.85 gm). Struck 222-228 AD. IMP C M AVR SEV ALEXAND AVG, laureate and draped bust right / MART-I PA-CIFERO, Mars standing front, head left, holding branch and reversed spear. RIC IV 160; BMCRE 72; RSC 173. EF, weak reverse strike. Estimate $75. Used by permission of CNG, www.historicalcoins.com.