Caracalla, AE29 of Pautalia, Thrace.

AYT K M AYRH ANTWNINOC, laureate, draped, cuirassed bust 
left, holding spear and shield.
OYLPIAC PAYTALIAC, river-god reclining left, holding patera 
in outstretched right hand and reed in left arm, resting 
left arm on overturned urn from which waters flow.

Varbanov 5179 (this coin).
(Note: The image in Varbanov is entitled 5180 in error).