Caracalla, AE30 of Trajanopolis, Thrace.

AVT K M AVR CE ANTWNEINOC, radiate head right.
TRAIANOPOLEITWN, Statuary group of the Three Graces. 

Varbanov 2857 (this coin).

Original owner information lost in website
attack, March 2009. Possibly from a Dr. Lanz Auction
before 2008. Re-added in August, 2011