Gordian III and Tranquillina, AE28 Pentassarion, Mesembria, Thrace. 

AYT K M ANT GORDIANOC AYG CEB TPANKILLINA, laureate, draped 
bust of Gordian right, facing draped bust of Tranquillina 
left.
MECAMBPIANWN, Bonus-Eventus (Apollo), naked, standing 
facing, head left, holding branch and patera. 

Moushmov 4002; Varbanov 4180.

With permission of Roma Numismatics, Jun, 2010