Caracalla, AE32 of Serdica, Thrace.

AVT K M AVR CEV ANTWNEINOC, laureate head right.
OVLPIAC CERDIKHC, Eagle standing facing, head right, holding 
wreath in its beak. 

With permission of www.slaveycoins.com, March 2012.

Moushmov 4886; Varbanov 2283-2284 var (bust type and obv. legend); 
Ruzicka 349-350 var (eagle's head left).