Caracalla AE16 of Nikopolis, Moesia Inferior. 

M AVP K (ANTWNINOC), bare-headed, draped and cuirassed bust right
NIKOPOLEIT PROC I, around laurel wreath.

Mionnet Supp. 2, 505 var (legend position)

Ancient Coin Art, item no. 3440, July 2003. Added from old 
"Mystery Coins" folder, May 2010.