Caracalla, AE29 of Serdica, Thrace. 

160. AVT K M AVP CEVH ANTWNEINOC, large laureate head right. 
OVLPIAC CEP0IKHC, Apollo Kitharoidos wearing long tunic 
and mantle over shoulders, standing left, holding patera 
and large lyre. 

Varbanov 2171; Ruzicka 160. 
Very rare.

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