Gordian III and Serapis AE 29mm of Markianopolis, Moesia Inferior. 

M ANT GORDIANOC AVG, laureate, draped and cuirassed bust of 
Gordian right, facing draped bust of Serapis left.

VP MNOFILOV MARKIANOPOLITWN, Zeus, naked to waist, seated 
left, holding patera and sceptre; eagle at foot left. 

Varbanov 2028; AMNG 1124.
With permission of Numismatik Lanz, Munich, from an old auction. Added Sept. 2011.