Septimius Severus AE26 of Nikopolis. Magistrate Gallus. 

AV K L CEP CEVHROC P, laureate head right 
VP AUR GALLOU NIKOPO PROC I, three story city gate, with an arched cupola, open door and windows.

H&J 8.14.46.4; Moushmov 931.
Very rare

With permission of Numismatic Naumann, auction 52. April 2017.