Diadumenian AE16 of Nikopolis ad Istrum.

K M OPPEL ANTWNINOC, bare head right.
(NIKO)PO-LITWN, Aesklepios standing facing, head left,
resting on serpent-entwined staff.

Megaw NIC1.1b; Varbanov 3593; AMNG 1875.

with kind permission of highrating_lowprice on ebay, March 2012.