Caracalla, AE16 of Nikopolis ad Istrum, Moesia. 

AV K M AVR ANTWNINOC, laureate, draped, cuirassed bust right.
V FL OVLPIANOY NIKOPOLI PROC I, Dionysos standing left, holding
thyrsos and emptying kantharos over panther at feet left.

Varbanov 3124 (this coin).

Courtesy of Antike Muenzen Auction, 2002, lot 758. Added 
Sept. 2011.