Gordian III and Serapis, AE26 of Odessos, Thrace.

AYT M ANT GORDIANOC AVG, laureate draped bust of Gordian 
right, facing bust of Serapis left, wearing polos, cornucopiae
to right.
ODHCCEITWN, eagle standing right, head left, holding ring in beak.
E in right field.

Varbanov 4486