Gordian III and Serapis, AE28 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, Agonistic table surmounted by purse and prize urn
containing two palm branches, amphora beneath the table.

Varbanov 4539 (this coin).

With kind permission of Numismatik Lanz, Auction 97, 2000.