Septimius Severus AE21 of Nicomedia, Bithynia. AD 193-211. 12 g.

AY K L CEP CEYHROC CE, laureate head right.
NIKOMHDEWN DIC NEWKORWN, octostyle temple. Circular countermark of head right below (Howgego 65). 

RecGen 179; Naples 35705; Williams, Florence 102; Florence 35005. (all ca. 5 mm larger).

With permission of Numismatic Naumann, auction 126, lot 647, March 2023.