Gordian III and Serapis.

AYT K MA ANTWNI GORDIANOC, laureate, draped and cuirassed bust of 
Gordian right, facing draped bust of Serapis left.
ODHCCEITWN, Cybele seated left, holding patera and resting 
left elbow on drum. E below.

Varbanov 4473; AMNG 2352.