Elagabalus AE27 of Nikopolis ad Istrum.

obv: AV K M AVR ANTWNEINOC, laureate head right.
rev: VP NOBIOV ROVFOV NIKOPOLITWN PROC ICTRON, city gate 
with square doorway and two flat towers. 

Varbanov 3989 (this coin cited)

With permission of Ray Wilk, city gate collection. 2003.