Caracalla, AE29 of Serdica, Thrace. 18.00 g. AD 198-217.

AVT K M AVRH ANTWNINOC, laureate head right.
OVLPIAC CERDIKHC, Hades-Serapis seated left, right foot on 
a globe, holding sceptre and reaching down to Kerberos at 
foot left. 

Ruzicka 123; Mionnet Supp. II, 1655. Varbanov 2316 var (obv. legend).

Classical Numismatic Group - Electronic Auction 320, Lot 280

With permission of cngcoins.com, Feb 2014
Estimate: $150