Caracalla, AE30 of Serdica, Thrace.

AVT K M AVPH CEVH ANTWNEINOC, laureate, cuirassed bust right, 
seen from behind.  
OVLPI AC CEP0IKH-C in ex. River god Oiskos, bearded, wreath on 
head, reclining left on waves, holding reed in right hand and 
resting left on rock. 

Ruzicka 283; Sofia 2936.

With kind permission of www.edgarlowen.com, Nov. 2011.