Caracalla, AE28 of Kallatis, Thrace. 

AVK M AVR ANTWNINOC, laureate, draped, cuirassed bust right.
KALLATIANWN, Emperor on horseback right, Epsilon in upper left field. 

Varbanov 312 (this coin, legend corrected).

With permission of CNG cngcoins.com, from an
old auction. Restored and re-added Sept. 2011.

Note: Varbanov has the wrong obv. legend for this
coin - it should be legend B, not legend A. This coin
is illustrated.