Divus Severus Alexander Antoninianus. 

Struck under Trajan Decius.

obv: DIVO ALEXANDRO, radiate head right 
rev: CONSECRATIO, eagle standing. 

RIC 97[decius], RSC 597.

(Severus Alexander didn't mint any antoniniani during his own reign.)

Image contributed by Ken Dorney, www.coolcoins.com