Julia Domna, AE18 of Serdica, Thrace. AD 193-217. 4.16 g. 

IO DOM CEBAC, draped bust right.
CER-DWN legend in two lines within wreath. 

Varbanov 1997; Ruzicka 92; Moushmov 4800. 

With permission of cngcoins.com, Feb 2007.