Gordian III and Serapis AE28 of Dionysopolis. 

AVT K M ANTWNINOC GORDIANOC AVG, laureate, draped, 
cuirassed bust of Gordian right, facing draped bust
of Serapis left.
DIONYCOPOLEITWN, Serapis standing left, holding sceptre
and raising right hand. Retrograde E in left field. 

Varbanov 574; AMNG 386 var (field mark).

Note: This image was recovered after having been destroyed 
in the March 2009 website attack. The owner or seller
information was unfortunately lost. Re-added in September, 2011.