Severus Alexander, AE denarius. 

IMP ALEXANDER PIVS AVG, laureate head right with slight
drapery on left shoulder. 
PROVIDENTIA AVG, Annona standing left by modius, holding
corn-ears and cornucopiae. 

RIC 250; RSC 501c; BMC 875. 

With permission of Helios Auction 5, June 2010, lot 355.
Added in Aug. 2011.