Gordian III AE28 of Nikopolis ad Istrum. Magistrate Modestus. 

AVT K M ANT GORDIANOC AVG, laureate, draped, cuirassed bust right.
VP CAB MODECTOV NIKOPOLITWN PROC ICTRON, city gate with two conical towers. 

Varbanov 4182; AMNG 2107.

Used with permission of CNG (cngcoins.com), July, 2011