Caracalla, AE32 of Nicaea, Bithynia. AD 211-217. 16.36 g.

ANTWNINOC AVGVSTOC, laureate, cuirassed bust right.
NIKAIEWN, Herakles walking left, looking right, wielding
club, leading Kerberos behind him.

RecGen 448 corr. (description). 

With permission of Gorny & Mosch, Oct 2002
Note: The example in RecGen is worn at the lower right,
and Kerberos is not clear.