Gordian III AE 27 of Nikopolis ad Istrum. Legate Sabinius Modestus.

 
AVT K M ANTW GORDIANOC AVG, radiate, cuirassed bust right, 
Gorgoneion on breast plate and aegis with erect serpents on far 
shoulder.
YP CAB MODECTOY NIKOPOLEITWN PROC ICTRON, Hermes, naked, 
standing left, foot on rock, holding caduceus and purse. 

Courtesy of Akropolis Ancient Coins
http://akropoliscoins.com.

Varbanov 4204; AMNG 2056.