Caracalla AE28 of Mesembria, Thrace. 13.93g.

Obv: AV K M AVP ANTWNINOC, laureate, draped and cuirassed bust right.
Rev: MECAMB-P-IANWN, two Curetes (Korybanti) in short tunics, with 
swords and shields, dancing, whirling about, one striking the shield 
of the other, high and low, in classic sword dance style.

Varbanov 4159
Extremely rare.

Contributed by "wandigeaux" of Forum Ancient Coins, Jan. 2011.