Silver denarius, 20mm, 3.28gm, issued AD 231-235 Rome mint.
Obv: IMP ALEXANDER PIVS AVG, Bust of Severus Alexander, laureate, draped, right.
Rev: MARS VLTOR, Mars, helmeted, walking right, holding spear in right hand and shield in left hand.
References: Sear 7882, RIC 246, RSC 161a.