Gordian III and Serapis, AE25, Odessos. 

Obv: M ANTWNIOS GORDIANOC AVT K M, laureate, draped & cuirassed bust of 
 Gordian facing bust of Serapis, modius on head 
Rev: ODHCC-EITWN, Athena helmeted standing right, holding inverted spear and 
 resting on shield. 

Moushmov 1657

With permission of Roma Numismatics, June 2009