Watch List notes:

Severus Alexander. AD 222-235. AR Denarius (18mm, 2.94 g, 12h). Rome mint. 9th emission, AD 228. Laureate head right / Mars standing right, holding reversed spear and shield set on ground to right. RIC IV 83; BMCRE 503-5; RSC 337. Toned. Good VF. Nicely modeled portrait.