Pertinax, AE sestertius. AD 193. 28.21 g. 

IMP CAES P HELV PERTINAX, laureate head right.
OPI DIVIN TR P COS II, S–C, Ops seated left, holding 
corn ears. 

RIC 20; Cohen 34; BMC 42; Sear 6054 (this coin). 
Extremely rare.

With permission of Numismatica Ars Classica, auction 51, lot 341, March 2009