Gordian III, AE28 Pentassarion of Kallatis, Thrace. Obv: AVT K M ANT GORDIANOC AVG, laureate, draped, cuirassed bust right. Rev: KALLATIANWN, Nike advancing left, holding wreath and palm. E in left field. Varbanov 375 (this coin). Used with permission of CNG coins, www.cngcoins.com, Feb. 2011