Septimius Severus, AE31 of Kios, Bithynia. AD 193-211. 19.33 g.

AYTO CEOHROC AYGOYCTO, laureate, draped and cuirassed bust right.
KIANWN (partially retrograde), Serapis seated left, 
holding patera and sceptre. 

Baron Behr Coll. 392; Drexler ("Der Isis- und Sarapis-Cultus 
in Kleinasien") Cius 1. Not in RecGen, BMC, SNG Cop, SNG von Aulock etc. 

With permission of cngcoins.com, March 2007
Classical Numismatic Group - Electronic Auction 160, Lot 144