Pertinax Æ Sestertius. January 1st - March 28th, 193 AD. Obv: IMP CAES P HELV PERTINAX AVG, laureate head right Rev: AEQVIT AVG TR P COS II S-C, Aequitas standing left holding scales & cornucopiae. Cohen 5. Contributed by Steve McBride, December, 2004.