Septimius Severus, AE31 of Serdica, Thrace. AD 193-211. 13.96 g. Magistrate Caecina Largus. 

A K L CEPTI CEYHROC P, laureate head right, slight drapery on left shoulder.
HG KAIKI LARGOY OYLPIA CERDIKHC, Herakles standing right, strangling the Nemean lion.

Kurth Herakles 98. Ruzicka 274 var (this reverse for Caracalla). Second example seen.
Not in Ruzicka, Varbanov, Moushmov, Tachella, Serdica museum  etc. for Sept. Severus. 

With permission of Savoca 108th Silver Auction, lot 250, July 2021.