Septimius Severus, AE16 of Nikopolis ad Istrum, Moesia Inf.

AV KAI CE CEVHROC, laureate head right.
NIKOPOLI PROC ICTR, Priapus, standing left, holding back
robe, exposing his erect phallus.

Varbanov 2328 (this coin), description corrected. 

oldromancoins.com ebay sale, 2002.
Note: This image was recovered after having been destroyed 
in the March 2009 website attack. Recovered and re-added in 
October, 2011.