Caracalla AE30 of Serdica, Thrace. AVT K M AVR CEV ANTWNEINOC, Laureate head right. OVLPIAC CERDIKHC, Helios, radiate and with cape flowing behind, advancing right, holding whip in left arm, raising right hand. Varbanov 2320 (this coin); Ruzicka 153 var (obv. legend).