Caracalla AE27 of Anchialus, Thrace. 

AV K M AV ANTWNINOC, laureate, cuirassed bust right.
OVLPIANWN AGCIALEWN, Homonoia standing left, kalathos
on head, holding patera and cornucopaie. 

Varbanov 376 corr. (obv. legend), this coin.

ebay sale by WCNC online, 1999.