Septimius Severus AE18 of Serdica, Thrace. 4.0 g. AD 193-211. 

(from top, clockwise), AYTO KA CEPTIM CEVHROC P, 
laureate head left.
OYLPIAC CERDIKHC, fountain with a spout on each side, 
on rocky mound.

Unpublished with head left, H&J 12.14.46.3-4 var (bust type); Varbanov 1914 var (ditto); CNG 323, Lot 217.

with permission of cngcoins.com, March 2014
Estimate: $100.