Bronze as, 24mm, 6.65gm, issued AD 227 Rome mint.
Obv: IMP CAES M AVR SEV ALEXANDER AVG, Bust of Severus Alexander, laureate, draped, cuirassed, right.
Rev: P M TR P VI COS II P P S C, Pax, draped, running left, holding olive-branch in right hand and sceptre in left hand.
References: Sear 8076, RIC 466.